Chi Square

8 Concepts
Scatterplots

3 Concepts
Simple Linear Regression

5 Concepts
Analysis of Variance (ANOVA)

6 Concepts
Summary of Fit

3 Concepts
Parameter Estimates

1 Concept
Confidence Intervals (Part 2)

3 Concepts
Prediction Intervals

2 Concepts
Hypothesis Tests (Part 2)

2 Concepts
**#2:** The observations are **independent** of one another.

**#3:** The spread of residuals on the **residual plot** is **evenly spread** (for all predictor(s)).

This looks good...

...this does not. There's obviously a non-linear trend going on here with the residuals!

**#4:** A **histogram of the residuals** resembles a **normal** distribution (for all predictor(s)).

The distribution looks like this...

...which you may see represented in the "normal quantile plot". As long as it follows the red solid line, you're good!

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