For the topic of sampling the student can use a ViSta applet to demonstrate the effect of sample size on the shape of the sampling distribution of means. A Passive Applet for Sampling Distributions
In this example the population has only four equally likely values: 2, 4, 6 and 8. The example shows the population distribution and five sampling distributions of means of all possible unique samples of sizes 2, 3, 4, 5 and 6.
The student would be told to click here to see an example about sampling distributions.
If you don't have ViSta installed click here to see what the applet does.
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