Chi-Square Lesson

Is the sequel better than the original? The 2011 AP® Statistics free-response questions, Form B, is available for instructors to reference. Among the topics covered in the exam are histograms, distributions, studies and experiments,...

Chime in and learn about chi-square tests. An informative video describes when chi-square tests would be appropriate and how to perform chi-square tests. It looks at three different types: the goodness of fit test, the test of...

The gap between probability and statistics begins to become bridged in this video, where Sal explains the concepts of central and relative frequencies. Students who are transitioning between algebra and statistics will find this video...

Introduce the concept of hypothesis testing, confidence intervals, and degrees of freedom with a short video that also covers the chi-square test and works through several examples to help viewers understand the material.

[Free Registration/Login may be required to access all resource tools.] Students will learn what the Chi-Square statistic is and how to use it to perform a Goodness of Fit test on a hypothesized distribution.

Video gives an example of the step by step process of using a Pearson's chi-square test to accept or reject a hypothesized data distribution. [11:48]

Video evaluates a contingency table about whether herbs effect a person contracting the flu by showing how to use a chi-square test. [17:37]

Video gives an introduction to what the chi-square distribution represents. Explains the effect of the degrees of freedom on the distribution and shows a graphical representation of the distribution with different degrees of freedom....

Capture the hearts of your young statisticians with this real-life example of using statistics in online dating. The use of average and geometric mean are discussed in the context of creating the algorithm used to connect people.

What are the characteristics of a polynomial that would make it factorable by the difference of squares rule? There are four must haves: two terms, coefficients are perfect squares, minus sign, degree of each term is even or zero. If it...