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Sample Calculator

The Sample Calculator answers one of the most frequently asked questions in statistics: What size sample do I...

$ 0.99

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The Sample Calculator answers one of the most frequently asked questions in statistics: What size sample do I need?

You provide the estimated population variance (standard deviation) and the allowable error band, choose one of two confidence levels (.95 or .99), and the sample size needed is displayed.

Size

9.1 MB

Last update

Nov. 28, 2019

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