Summary

- Hypothesis Test for Two Means
- When to use it: To test the difference of two sample means when population variances are unknown but considered equal

- Hypothesis Test for Two Variances:
- When to use it: To test if the variances of two populations are equal

- Hypothesis Test for Paired Observations:
- When to use it: to test two sample means when their respective population variances are unknown but considered equal and with data recorded in pairs.

- One-Way ANOVA:
- When to use it: to test the difference of three or more population means

- Two-Way ANOVA:
- When to use it: to test the difference of three or more population means under influence of two different categorical independent variables.

- Simple Regression
- When to use it: To predict the value of a dependent variable Y from on independent variable X

- Multiple Regression:
- When to use it: To predict the value of a dependent variable Y from a set of independent variables (X1, X2, …, Xk)

Also see the AAQ topic breakdown for other important topics not covered in this module that relate to Statistics. These topics include:

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