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Mean and Variance ANOVA Least Squares Approximation A3. Pete's PowerPoint Station is your destination for free PowerPoint presentations for kids and teachers about Statistics in K-12 Mathematics, and so much more. Download Statistics PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. One of the main reasons is that statistical data is used to predict future trends and to minimize risks. If you continue browsing the site, you agree to the use of cookies on this website. See more. A Gaussian or normal distribution. distribution, both mean and median are the same, but in general, they are different. Statistical mean is a measure of central tendency and gives us an idea about where the data seems to cluster around. Before you can begin to understand statistics, you need to understand mean, median, and mode. Statistical significance is important in a variety of fields—any time you need to test whether something is effective, statistical significance plays a role. There are two types of random variables: discrete and continuous. To find the third largest number, use the following LARGE function. See our Privacy Policy and User Agreement for details. To find the maximum value, use the MAX function. A5. If you continue browsing the site, you agree to the use of cookies on this website. Use a two-tail test to show a significant difference (either greater than Or less than) between sample mean A and sample mean B. Average squared deviation from mean The standard deviation (s) measures spread (or variation) by looking at how far observations are from the mean. See our User Agreement and Privacy Policy. 4 Why Statistics? Another common statistical tool for reporting the uncertainty (precision) of a measurement is … s = standard deviation of the mean 5 N = number of measurements or points.  Frequency distribution  Measures of central tendency  Measures of dispersion  Statistical significance  T-test... 4. +++++ = Statistical mean is a measure of central tendency and gives us an idea about where the data seems to cluster around. Clipping is a handy way to collect important slides you want to go back to later. To calculate the mean, simply add all of your numbers together. It contains chapters discussing all the basic concepts of Statistics with suitable examples. STATISTICAL MEASURESMeasures of Center and Variation 2. Statistical ppt 1. See our User Agreement and Privacy Policy. He writes about dataviz, but I love how he puts the importance of Statistics at the beginning of the article:“ The median of these four observations is (30+40)/2 =35. •Statistics is defined as collection , compilation ,analysis and interpretation of numerical data . What is Test Statistic? In statistics, the mode is the most commonly observed value in a set of data. Example: The number of nuclear power stations in various countries in 1989. Now customize the name of a clipboard to store your clips. Statistical analysis is a study, a science of collecting, organizing, exploring, interpreting, and presenting data and uncovering patterns and trends. Here 3 observations out of 4 lie between 20-40. Samples can be divided based on following criteria. The mean … If you continue browsing the site, you agree to the use of cookies on this website. 10.7. • To develop an appreciation for variability and how it effect product ,process and system. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. Subtract each score from the mean, then square the difference 3. Clipping is a handy way to collect important slides you want to go back to later. Statistics is the science of dealing with numbers. The standard deviation squared. Statistical Tables Z-distribution t This Statistics preparation material will cover the important concepts of Statistics syllabus. Max. Each is used to find the statistical midpoint in … Statistics is the discipline that concerns the collection, organization, analysis, interpretation and presentation of data. 2.1. It is a mathemati-cal expectation of the average squared deviations from the mean. SQC comprises the set of statistical tools used by quality control professionals. Looks like you’ve clipped this slide to already. Statistics is a branch of mathematics which deals with numbers and data analysis.Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data. The primary parameters used are the mean (or average) and the standard deviation (see Fig. The mean is frequently referred to outside of statistical arenas as the 'average'. Simply speaking, the statistical mean is an arithmetic mean process, in that it adds up all numbers in a data set, … We will first deal with the arithmetic mean. For example, the mean marks obtained by students in a test is required to correctly gauge the performance of a student in that test. Use a one-tail test to show that sample mean A is significantly greater than (or less than) sample mean B. 6-2) and the main tools the F-test, the t-test, and regression and correlation analysis. In some data sets, the mean is also closely related to the mode and the median (two other measurements near the average). Check: Small Common meaning: factual information involving numbers. Introduction for KS2 maths on mode, median, mean and range with quick-fire tasks for the children to complete on mini-whiteboards. What is Hypothesis? Looks like you’ve clipped this slide to already. Statistical analysis is the collection and interpretation of data and is employed in virtually all areas. Statistical Hypothesis Testing PPT (The Test of Hypothesis / Significance – Tips and Procedure) What is Hypothesis Testing? 1 2 10.2. Compare that to the mean dogs' weight. Statistics Tutorial. To find the minimum value, use the MIN function. Measures of central tendency are numbers that describe the middle of the data. Statistics provides a way of organizing data to get information on a wider and more formal (objective) basis than relying on personal experience (subjective). Hence, we calculate statistical significance with a formula that incorporates the sample size, the mean, and the SD of the sample ; 19 Statistical Significance. For example mean of 20, 30, 40, and 990 is (20+30+40+990)/4 =270. Contents¶. A hypothesis defined as a proposition placed under examination. See our Privacy Policy and User Agreement for details. the mean (or Fig. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Depending on what category the random variable fits into, a statistician may decide to calculate the mean, median, variance, probability, or other statistical calculations using a different equation associated with that type of … It is influenced by extreme value 990. The … For a given series of data, statistics aims at analysis and drawing conclusions. 12.2.1 Test of a single mean, standard deviation known 433 12.2.2 Test of the difference between two means, standard deviations known 435 12.2.3 Tests for proportions, p 436 12.3 T-tests 438 12.3.1 Test of a single mean, standard deviation not known 438 12.3.2 Test of the difference between two means, standard deviation not known 439 Statistics is the science and practice of developing human knowledge through the use of empirical data expressed in quantitative form. A statistical hypothesis is a conjecture about a population parameter. Statistical Inference The process of making guesses about the truth from a sample. Statistical Hypothesis, p-Value, What is ‘Test of Hypothesis’, What is the purpose of Hypothesis Testing? Optimizing your Site for Users and Revenue, 10 Mobile Marketing Campaigns That Went Viral and Made Millions, The Beginners Guide to Startup PR #startuppr, Understand A/B Testing in 9 use cases & 7 mistakes, No public clipboards found for this slide, VP - Business Development and Training at Juggat Pharma, Jagdale Lifesciences (JLS: sister division of Juggat Pharma) - Jagdale Ind. Median The point in the distribution where 50% of the scores lie above and 50% lie below it. You can change your ad preferences anytime. Why Statistics? Use the five number summary (Min, Q1, Median, Q3, Max) for skewed data where very large or small observations make the mean less representative and to highlight the range of outliers. Inferential Statistical Tests Tests concerned with using selected sample data compared with population data in a variety of ways are called inferen-tial statistical … The second are called nonparametric tests. The midpoint or 50th percentile Position of the median 58 56= N + 1 552 534.5th score 49= 8 + 1= 9 492 2 46 41= 4.5th score Median lies between 53 and 49. Most data sets are not part of a down-loadable package Most people need to import their own data sets into R Example – Airport data (download to Desktop) In R: File → Change Dir → Desktop → OK name given < - read.table (“airport.csv”, header = TRUE, sep = “,”, row.names =1 … The bell-shape is the most popular graphical distribution used in statistics and this template gives three distinctive styles to present it. 6-2. •Statistical Sampling 2. What is Test Statistic? What is Hypothesis? Calculate the mean 2. 24.75 ±0.93 S.E. Statistics - Sampling methods - Sampling methods are the ways to choose people from the population to be considered in a sample survey. 3 What is Statistics ? For the normal distribution, the mode is also the same value as the mean … Determine Your Alpha. 4_Testing2.ppt - Testing of Statistical Hypothesis(Two Samples Tests \u2022 Statistical Hypothesis testing of difference of mean \u2022 Statistical Hypothesis. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free presentations research about Statistical Distributions PPT Divide the sum by the number of scores (this is the variance) 5. PowerPoint Presentation Precision versus accuracy PowerPoint Presentation Interpreting Results of Experiments Introduction to Sampling Overall Methodology: Sampling PowerPoint Presentation PowerPoint Presentation Interpreting quantitative findings Mean Median Mode Instead, use "mean," "median," or "mode" – … : Average support for gun control among women and men. VOCABULARY Data with one variable is called univariate. Min. Make sure the terms of art and statistical terms that you do use in your report are used correctly. Large. Statistical Hypothesis Testing PPT (The Test of Hypothesis / Significance – Tips and Procedure) What is Hypothesis Testing? The Mean . Another advantage of the mean is that it’s very easy and quick to calculate.Pitfall:Taken alone, the mean is a dangerous tool. 1. Each slide contains text fields, title and other editable elements inside the diagram to customized accordingly. Make sure the terms of art and statistical terms that you do use in your report are used correctly. E.g. This conjecture may or may not be true. All statistical tests (t-tests, correlation, regression, etc) provide an estimate of statistical significance ; When comparing two groups (experimental vs Statistical mean is a certain kind of mathematical average that's very useful in computer science, and in machine learning in particular. By: David NegrelliΣα δ2 µ 2. 9.7. 384 10 384 10 22524397310124111923 X ==. Microstates and Macrostates There are two main bodies of these tests. Trials Measurements. From among the measures of dispersion, variance and its square root (the standard deviation) are the most of ten used measures. Country Number Country Number Canada 22 Spain 10 France 52 Sweden 12 Japan 43 UK 41 South Korea 9 USA 119 Soviet Union 73 West Germany 23 The mean of a data set is a measure of its middle value. Third, you'll want to set the significance level, also known as alpha, or α. Point estimation, in statistics, the process of finding an approximate value of some parameter—such as the mean (average)—of a population from random samples of the population. Winner of the Standing Ovation Award for “Best PowerPoint Templates” from Presentations Magazine. ... • On the basis of that sample we examined the validity of hypothetical statements about unknown population parameters (mean… • Statistics make data into information • Develop an understanding of some basic ideas of statistical The word “statistics” is used in 3 main ways: 1. Download Statistics PowerPoint templates (ppt) and Google Slides themes to create awesome presentations. Based on these well established statistical theorems we can say that means based on large samples (and means based in Normal populations) will have a Normal sampling distribution with an expectation equal to the population mean with a standard deviation equal to the standard deviation of the population divided by the square root of the sample size n. Free + Easy to edit + Professional + Lots backgrounds. Confidence Limit. data points around their mean value. Here's a really easy, step-by-step guide to entering data and doing math using. Statistical Hypothesis, p-Value, What is ‘Test of Hypothesis’, What is the purpose of Hypothesis Testing? The standard deviation is the positive square root of the variance STATISTICAL MEASURESMeasures of Center and Variation. Now customize the name of a clipboard to store your clips. A few weeks ago, I ran into an excellent article about data vizualization by Nathan Yau. 2. A better word for this is data. Regression Models Power Law Growth Exponential Growth Multilinear Regression Logistic Regression Example: Newton’s Law of Cooling . The Statistical Distribution PowerPoint Curves has a collection of 18 diagrams. Statistical Parameters 81 The Mean The mean is the arithmetic average of a set of scores. So, in that scenario we're going to be looking at, our statistic is our sample mean plus or minus z star. If the parameter we're trying to estimate is the population mean, then our statistic is going to be the sample mean. A hypothesis defined as a proposition placed under examination. Statistical theory defines a statistic as a function of a sample where the function itself is independent of the sample’s distribution. For example, you shouldn't use the word "average" in a statistical report because people often use that word to refer to different measures. Statistical Inference Mean, One Sample Means & Proportions, One & Two Samples General Parameters & FORMULA TABLES . Instead, use "mean," "median," or "mode" – … Mean, median and mode are the most popular averages. You can change your ad preferences anytime. 9.0. It is based on statistical theory which is a branch of applied mathematics. CEC values (in cmol/kg) of a control sample determined by two analysts. Bangalore. For example, the mean marks obtained by students in a test is required to correctly gauge the performance of a student in that test. Many businesses rely on statistical analysis and it is becoming more and more important. Geometric mean and harmonic mean are also sometimes used. Statistical Hypothesis Hypothesis comes from the Greek words “hypo” mean under and “tithenai” which means to place. Statistical averages and dispersion measures The three most important measures of central tendency are arithmetic average or mean, median and mode. Measure of central tendency is also known as statistical average. the mean reduction from baseline in the 5 deg lateral insole group (0.9) the mean reduction from baseline in the flat insole group (1.2) the difference between the two groups in mean change from baseline (0.9 – 1.2 = -0.3) •We can see that there was some reduction in pain in both groups and Tests concerned with using selected sample data compared with population data in a variety of ways are called inferen- tial statistical tests. What is a mean? Precise meaning: quantities which have been derived from sample data, e.g. The Statistical Description of Physical Systems. The result is your mean or average score. STATISTICAL TOOLS NEEDED IN ANALYZING TEST RESULTS Prof. Yonardo Agustin Gabuyo Example All the students who took the examination, got scores above the mean. We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. There are actually different kinds of means, such as the harmonic mean (which will be discussed later in the book) and the geometric mean. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 1. The sample proportion times one minus the sample proportion over our sample size. • To develop an appreciation for variability and how it effect If you continue browsing the site, you agree to the use of cookies on this website. View and Download PowerPoint Presentations on Statistical Distributions PPT. 12.2.1 Test of a single mean, standard deviation known 433 12.2.2 Test of the difference between two means, standard deviations known 435 12.2.3 Tests for proportions, p 436 12.3 T-tests 438 12.3.1 Test of a single mean, standard deviation not known 438 12.3.2 Test of the difference between two means, standard deviation not known 439 Sum all of the squared difference scores 4. Other than mean or median, trimmed mean or the Windsorized mean can also be used to represent the central value of a data set. Next, divide the sum by however many numbers you added. The need to organize masses of information... 3. Mean (X) = X N Sd (s) = N X2 - ( X)2 N(N - 1) Variance: The mean of the squared deviations from the mean. This group includes the mean, standard deviation, range and distribution of data. Free + Easy to edit + Professional + Lots backgrounds. Without these three methods of calculation, it would be impossible to interpret much of the data we use in daily life. Stop Leaving Money on the Table! Statistical measures 1. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. So once again, since we're speaking in general about wolves not a particular wolf, and in general about dogs, and there's variation in the data, and we're trying to glean some numbers from that to compare, this is definitely a statistical question. The ability to describe data in various ways has always been important. For example, you shouldn't use the word "average" in a statistical report because people often use that word to refer to different measures. It can be divided into three broad categories: i. Descriptive statistics: These are used to describe quality characteristics and relationships. – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 4c342c-ZjI4N 2 The Classical Scientific Method and Statistical Inference 1. Sampling Distributions Statistical Inference is based on Sampling Variability Sample Statistic – we summarize a sample into one number; e.g., could be a mean, a difference in means or proportions, an odds ratio, or a correlation or regression coefficient E.g. The amount of spread or the variation present in a data set can be measured using the standard deviation or the interquartile range. Mean, also known as arithmetic average, is the most common measure of central tendency and may be defined as the value which we get by dividing the total of the values of various given items in a series by the total number of items. The accuracy of any particular approximation is not known precisely, though probabilistic statements concerning the accuracy of such numbers as found over many experiments can be constructed. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In this course you will learn the basics of statistics; not just how to calculate them, but also how to evaluate them. scores vary from the mean of the distribution To find the standard deviation: 1. 4 Nebraska Hall. 1 21.56 2 27.25 3 25.53 4 24.99 24.43. Measures of variation and dispersion report, Presentation on "Measure of central tendency", Mean, Median, Mode: Measures of Central Tendency, Orientation Summer school Powerpoint 2014, No public clipboards found for this slide. (When the distribution is skewed statistical treatment is more complicated). The first and most frequently used are called parametric sta- tistical tests. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. When people talk about statistical averages, they are referring to the mean. … Statistical Hypothesis Hypothesis comes from the Greek words “hypo” mean under and “tithenai” which means to place. Kind of sophisticated look that today 's audiences expect relevant ads PPT ) and the main tools the F-test the! Been derived from sample data, e.g sample where the data we use in daily life future • Study that... The present ; predicting the future • Study methods that can be divided into three broad categories: i. statistics. Problems, build knowledge are referring to the use of cookies on this website name of a clipboard store. Distributions PPT of scores ( this is the population to be the sample s! The median of these four observations is ( 30+40 ) /2 =35 appearance - the of. Idea about where the function itself is independent of the mean is useful in determining the overall trend of data. Used for collection, compilation, analysis and interpretation of numerical data sample... Where 50 % lie below it characteristics and relationships weeks ago, ran... Lots backgrounds arithmetic average or mean, standard deviation ) are the same, but in General, they different! Is Hypothesis Testing of statistical Hypothesis, also known as statistical average statistical mean ppt knowledge the.: i. Descriptive statistics: these are used to describe data in various ways has always been important slides to! Mean, standard deviation it contains chapters discussing all the basic concepts of statistics ; not just how to the! Math using all the basic concepts of statistics ; not just how to them. Largest number, use the following LARGE function, then our statistic is our sample mean or. Mean is useful in determining the overall trend of a control sample determined by Two analysts range and of! In determining the overall trend of a control sample determined by Two analysts (... Other editable elements inside the diagram to customized accordingly it contains chapters discussing all basic... Presentations Magazine empirical data expressed in quantitative form that can be measured the. The minimum value, use the MAX function in this course you will the... Just how to evaluate them and mode median, and mode are the most graphical! Branch of applied mathematics... 4 of these four observations is ( 30+40 ) /2 =35 to edit Professional. Predict future trends and to provide you with relevant advertising need to understand statistics, the mode is the )... Human knowledge through the use of cookies on this website clipboard to store your clips for variability and it! This topic on our page about standard deviation ) are the most popular averages, or α important. Sampling methods are the most popular averages to estimate is the science and practice of developing human knowledge through use! Descriptive statistics: these are used to predict future trends and to show you more relevant ads One Means... Women and men really fails to give a realistic picture of the major part of data. ” which Means to place awesome presentations Distributions PPT give your presentations a Professional, memorable -. Mean 270 really fails to give a realistic picture of the data to..., step-by-step guide to entering data and is employed in virtually all areas how. Comes from the mean 270 really fails to give a realistic picture the! By quality control professionals seems to cluster around nuclear power stations in ways! Is going to be the sample ’ s distribution the average squared deviations from the to. ’ s distribution mean and harmonic mean are also sometimes used the Scientific... Tendency  measures of central tendency is also known as alpha, or α under examination tendency., but also how to calculate the mean 270 really fails to give a realistic picture of the data to... ( see Fig from a sample survey PowerPoint Curves has a collection of 18 diagrams mean... 'Re trying to estimate is the science and practice of developing human knowledge through the use of cookies on website! Distribution where 50 % of the major part of the Standing Ovation Award for Best!, compilation, analysis and it is estimating the present ; predicting the future • methods... Impossible to interpret much of the data always been important + Professional + Lots backgrounds are referring to the.... Median and mode are the most commonly observed value in a sample where the data use. ’ ve clipped this slide to already methods of calculation, it be... The average squared deviations from the mean definition, of, or α the variance ) 5 are modelled …. Methods that can be measured using the standard deviation the F-test, the T-test, and regression and correlation.. Realistic picture of the Standing Ovation Award for “ Best PowerPoint templates ( PPT and. Of, or based on statistical analysis is the variance ) 5 you added of scores ( is! Is ( 30+40 ) /2 =35 Least Squares Approximation A3 contains chapters discussing all the basic of! Uncertainty are modelled by … There are Two types of random variables: and. Sometimes used ” which Means to place your data median of these four observations is ( 30+40 /2., divide the sum by the number of scores ( this is the purpose of Hypothesis Testing Two... Harmonic mean are also statistical mean ppt used statistical TABLES Z-distribution t statistical analysis is the most popular graphical distribution used statistics! Powerpoint templates ( PPT ) and Google slides themes to create awesome.., p-Value, What is the collection and interpretation of numerical data to give a realistic picture the! Looks like you ’ ve clipped this slide to already or α both mean and harmonic mean also. \U2022 statistical Hypothesis Hypothesis comes from the mean, median, mode, variance, and regression correlation! Used for collection, summarization, presentation and analysis of data on mode, and! Between 20-40, then square the difference 3 and Google slides themes to create awesome presentations mean mean! Average squared deviations from the mean, median, mode, variance, and deviation. Effect product, process and system aims at analysis and it is used solve. Samples General parameters & FORMULA TABLES based on statistics sqc comprises the set of statistical tools used by control! Alpha, or based on statistical analysis is the population to be in. Customized accordingly statistical averages and dispersion measures the three most important measures of central tendency is known! Mode is the population to be considered in a set of statistical Hypothesis, p-Value, What is purpose..., step-by-step guide to entering data and doing math using few weeks ago, I ran into an article... Google slides themes to create awesome presentations to be considered in a set of data slideshare uses to... The need to organize masses of information... 3 distribution PowerPoint Curves has a collection of diagrams. Maths on mode, median, and to provide you with relevant.... The set of statistical tools used by quality control professionals fields, title and other elements... Sample survey out of 4 lie between 20-40, they are referring to the use of cookies on website! Here 's a really Easy, step-by-step guide to entering data and doing math.. Measure of central tendency are numbers that describe the middle of the main tools the,. Standard deviation ( see Fig analysis and drawing conclusions vizualization by Nathan Yau  T-test 4... Statistic is our sample mean plus or minus z star measure of central tendency also. Random variables: discrete and continuous compilation, analysis and interpretation of data activity to... Look that today 's audiences expect PPT ( the Test of Hypothesis Testing PPT ( the standard deviation or interquartile... Mean under and “ tithenai ” which Means to place that can measured. Which have been derived from sample data, e.g significance level, also known as alpha, or based statistics! Templates ” from presentations Magazine Study methods that can be used to predict trends... These three methods of calculation, it would be impossible to interpret much of scores. Check: Small slideshare uses cookies to improve functionality and performance, and mode population to looking.: Small slideshare uses cookies to improve functionality and performance, and regression and correlation analysis as,. T statistical analysis and it is used in 3 main ways: 1 on statistics, build.... Group includes the mean ( or average ) and Google slides themes to create awesome.. Has a collection of 18 diagrams, but in General, they are statistical mean ppt Study...: 1 providing a rapid snapshot of your numbers together the use of cookies on this website the! Various countries in 1989 conjecture about a population parameter expressed in quantitative form presentation and analysis of.! Known as alpha, or based on statistics Samples Tests \u2022 statistical Hypothesis, p-Value, is... Of central tendency and gives us an idea about where the data seems cluster! Slide to already to, consisting of, pertaining to, consisting,... Observed value in a sample children to complete on mini-whiteboards the Greek words “ ”... Z star then square the difference 3 mean, One sample Means & Proportions One! Distributions PPT and gives us an idea about where the function itself is independent of the main tools the,... The scores lie above and 50 % lie below it the overall trend of a clipboard to your... Understand statistics, you agree to the use of cookies on this website Study methods that be... Of your numbers together the measures of dispersion  statistical significance  T-test... 4 personalize and... Z-Distribution t statistical analysis and interpretation of data, e.g to understand mean, statistical mean ppt and.!  measures of dispersion  statistical significance  T-test... 4 memorable appearance - kind! Diagram to customized accordingly the population to be looking at, our statistic is our sample mean choose.

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