This site teaches High Schoolers how to Make Inferences and Justify Conclusions using statistics through a series of 99 questions and interactive activities aligned to 4 Common Core mathematics skills.

This site teaches High Schoolers how to use probability to make decisions through a series of 158 questions and interactive activities aligned to 6 Common Core mathematics skills.

This 11-minute video lesson looks at the proof (part 1) of minimizing the squared error to regression line. [Statistics playlist: Lesson 63 of 85]

This 10-minute video lesson looks at the proof (part 2) of minimizing the squared error to regression line. [Statistics playlist: Lesson 64 of 85]

This 11-minute video lesson looks at the proof (part 3) of minimizing the squared error to regression line. [Statistics playlist: Lesson 65 of 85]

This 4-minute video lesson looks at the proof (part 3) of minimizing the squared error to regression line. [Statistics playlist: Lesson 66 of 85]

This 13-minute video lesson looks at R-squared or the coefficient of determination. [Statistics playlist: Lesson 68 of 85]

This 2-minute video lesson shows how to find the range and the mid-range of a set of numbers. [Statistics playlist: Lesson 2 of 85]

This 3-minute video lesson explains how to read box and whisker plots. [Statistics playlist: Lesson 10 of 85]

This 9-minute video lesson give a Rregression line example. [Statistics playlist: Lesson 67 of 85]

This 11-minute video lesson shows how to use the variance of a sample to estimate the variance of a population. [Statistics playlist: Lesson 14 of 85]

This 14-minute video lesson shows how to figure out the probability of running out of water on a camping trip. [Statistics playlist: Lesson 39 of 85]

This 11-minute video lesson looks at the the central limit theorem and the sampling distribution of the sample mean. [Statistics playlist: Lesson 36 of 85]

This 13-minute video lesson provides more discussion of the Central Limit Theorem and the Sampling Distribution of the Sample Mean. [Statistics playlist: Lesson 37 of 85]

This 9-minute video lesson provides a second regression example. [Statistics playlist: Lesson 69 of 85]

This 9-minute video lesson discusses the small sample hypothesis test. [Statistics playlist: Lesson 51 of 85]

This 11-minute video lesson shows how to construct small sample size confidence intervals using t-distributions. [Statistics playlist: Lesson 46 of 85]

This 7-minute video lesson provides an introduction to the idea that one can find a line that minimizes the squared distances to the points. [Statistics playlist: Lesson 62 of 85]

This 15-minute video lesson looks at the Standard Error of the Mean (a.k.a. the standard deviation of the sampling distribution of the sample mean!). [Statistics playlist: Lesson 38 of 85]