The Math Tutor DVD Statistics series, specifically Volume 7, serves as a comprehensive bridge between basic data description and complex inferential statistics. This volume focuses heavily on Hypothesis Testing for Means

The Strengths:

Expected frequency formula: [ E = \frac\text(row total) \times \text(column total)\textgrand total ] Degrees of freedom: ( df = (r - 1)(c - 1) )

Test if gender and opinion are independent.

This volume specifically addresses topics that are often found in the latter half of a university-level statistics course: