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Video Clips

Effect Size
This video describes how to calculate the effect size for independent samples t tests (2:24).

How to Report Statistics in APA Style
This is a tutorial for reporting statistics in APA style including special scripts/symbols and Equation Editor function in Word. Provides basic format for reporting results of the t test and other tests of significance (may be helpful for future chapters) (9:22).

One-Sample t Test
This video describes z test and t test by providing definitions and going through an example (4:48).

Understanding Confidence Intervals
This short video gives an explanation of the concept of confidence intervals with helpful diagrams and examples (4:02).

Confidence Intervals
This video discusses how to find z scores for confidence intervals and how to balance precision and certainty (11:00).

Audio Clips

Statistical vs. Practical Significance Using t Tests
This brief lecture describes statistical versus practical significance using the one-sample t test as an example (2:02).

Interval Estimation
Brief introduction to interval estimation (5:05).

Web Resources

Confidence Intervals and t Tests
This website provides and compares one- and two-sample t tests.

t Tests
Describes t tests and includes links to other helpful websites to further understand related concepts.

Degrees of Freedom
This website provides an overview of degrees of freedom by giving definitions and examples.

Effect Size and How to Report in APA Style
Describes effect sizes, significance, and gives examples of how to report results in APA style.