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20: Sample Size for a Mean Calculator

20: Sample Size for a Mean Calculator

Last updated

May 22, 2021
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- 19: Visually Compare the Student's t Distribution to the Normal Distribution
- 21: Confidence Interval for a Mean (With Data) Calculator

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Sample size Calculator

Fill in the population standard deviation ( $\sigma$ ), the error bound (E), and the confidence level (CL). Write the confidence level as a decimal. For example, for a 95% confidence level, enter 0.95 for CL. Then hit Calculate and assuming the population is normally distributed, the necessary sample size will be shown.

$\sigma$ :

CL:

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