Internet Exercises

Simulations and Demonstrations of Correlated t Test/Repeated Measures t Test


1		Read the demonstration directions and then click on "Exercise" and then the word "Begin" in the left corner of the screen. The applet will open. With the applet open, follow the directions for the exercises. These exercises are good practice to help you understand correlated t Tests. Based on these exercises, what is the relationship between the size of r and the value of correlated t? Explain your answer.

What Happens to the t Distribution When the Degrees of Freedom Change?


2		Read about the t distribution and then examine the changes to the distribution when the degrees of freedom increase and decrease by sliding the small bar on the applet. What is the difference between the density of the normal distribution and the t distribution? What happens to the t distribution when the number of degrees of freedom increases?

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