# Essential Statistics for the Behavioral Sciences

# Video and Multimedia

Click on the following links. Please note these will open in a new window.

*Video Clips*

Probability

This video discusses key points of probability (9:44).

Probability Distributions

This video includes discussion of key points of probability distributions (9:33).

What is a Standard Normal Distribution?

This video provides a visual and audio description of the normal curve. This is discussed in simplified terms with drawings (4:33).

Find the *z* Score

Describes *z *scores and how to find the *z *score of a data point (2:06).

An Introduction to the Normal Distribution

This video describes the normal distribution and important key points (5:26).

*Audio Clips*

The Stupidest Statistics in the Modern Era

NPR discusses meaningless statistics in sports (3:58).

Why People Probably Don’t Understand Probability

Professor Andrew Gelman discusses how people misunderstand probability when it comes to the coin toss (4:17).

Put Away the Bell Curve: Most of Us Aren’t “Average”

New research suggests that rather than describing how humans perform, the bell curve may actually be constraining how people perform (4:33).

A Scientific Approach to Helping the Homeless*The New Yorker *writer Malcolm Gladwell discusses how the homeless problem could be solved if assistance was provided to a small number of permanently homeless people (7:21).

Carl Friedrich Gauss

BBC podcast that gives a historical overview of the Gaussian, or bell-shaped, distribution and how it is used today (13:49).

*Web Resources*

Rules of Probability

This article describes the rules of probability, example problems with answers and explanations, and probability calculator.

Descriptive Statistics and Psychological Testing

This website illustrates the normal curve and discusses the meaning behind it. Also discusses scores (*t* scores, *z* scores, scaled scores) and percentiles.

*z* Score Calculator

This article and calculator describe how to convert a *z *score to a raw score.

Raw Score Calculator

This article and calculator describe how to convert a raw score to a *z *score.