This 8-minute video lesson takes problems from CK12.org to discuss using the Empirical Rule with a standard normal distribution. [Statistics playlist: Lesson 33 of 85]

This 6-minute video lesson uses problems from CK12.org to provide more Empirical Rule and Z-score practice. [Statistics playlist: Lesson 34 of 85]

This 10-minute video lesson takes some problems from CK12.org and uses the empirical rule (or 68-95-99.7 rule) to estimate probabilities for normal distributions. [Statistics playlist: Lesson 32 of 85]

This 11-minute video lesson takes some problems from CK12.org and discusses of how "normal" a distribution might be. [Statistics playlist: Lesson 30 of 85]

This 10-minute video lesson shows how to calculate R-squared to see how well a regression line fits the data. [Statistics playlist: Lesson 70 of 85]

This 10-minute video lesson introduces the chi-square distribution. [Statistics playlist: Lesson 72 of 85]

This 3-minute video lesson provides clarification of the previous video on the confidence interval for difference of means. [Statistics playlist: Lesson 57 of 85]

This 11-minute video lesson compares population proportions (part 1). [Statistics playlist: Lesson 59 of 85]

This 10-minute video lesson compares population proportions (part 2). [Statistics playlist: Lesson 60 of 85]

This 14-minute video lesson shows how to estimate the probability that the true population mean lies within a range around a sample mean .[Statistics playlist: Lesson 40 of 85]

This 19-minute video lesson gives an example of the Confidence Interval. [Statistics playlist: Lesson 45 of 85]

This 16-minute video lesson covers the confidence interval of difference of means. [Statistics playlist: Lesson 56 of 85]

This 18-minute video lesson covers the contingency table for the chi-square test. [Statistics playlist: Lesson 74 of 85]

This 11-minute video lesson looks at understanding why correlation does not imply causality (even though many in the press and some researchers often imply otherwise). [Statistics playlist: Lesson 78 of 85]

This 15-minute video lesson looks at covariance, variance, and the slope of the regression line. [Statistics playlist: Lesson 71 of 85]

This 2-minute video lesson explores deductive reasoning (part 1). [Statistics playlist: Lesson 79 of 85]

This 4-minute video lesson continues to explore deductive reasoning (part 2). [Statistics playlist: Lesson 80 of 85]

This 4-minute video lesson continues to explore deductive reasoning (part 3). [Statistics playlist: Lesson 81 of 85]

This 12-minute video lesson builds on the previous video and looks at the difference of sample means distribution. [Statistics playlist: Lesson 55 of 85]

The purpose of this course is to provide background in the ways in which psychologists evaluate data collected from research projects. A researcher may gather many pieces of data that describe a group of research subjects and there are common ways in which these pieces of information are presented. Secondly, statistical tests can help investigators draw inferences about the relationship of the research sample to the general population it is supposed to represent. As a student of psychology or any other discipline that uses research data to explore ideas, it is important that you know how data is evaluated and that you gain an understanding of the ways in which these procedures help to summarize and clarify data.