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Learning Math Home
Data Session 9, Part B: Selecting the Sample
Session 9 Part A Part B Part C Part D Homework
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Session 9 Materials:

Session 9, Part B:
Selecting the Sample

In This Part: Fair Sampling | A Fair Sampling Method | Variation in Estimates

A computer can perform random sampling and estimation much more quickly than you can by hand. The following Interactive Activity is set up to do just that.

Use the Interactive Activity to obtain three more samples of 10 sub-regions and to calculate resulting estimates for the total number of penguins in the region.

This activity requires the Flash plug-in, which you can download for free from Macromedia's Web site. For those who prefer, there is a non-interactive version of this activity.


Problem B5


Record your estimates in the following table:



 First Sample


 Problem B3

 Interactive Activity Sample 1

 Interactive Activity Sample 2

 Interactive Activity Sample 3

Based on these five estimates, how many penguins do you think there are in the entire region?

Next > Part C: Investigating Variation in Estimates

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