Sample Size Calculator for Estimating a Single Mean

  • Provides live interpretations.
  • Assesses the influence of changing input values.
  • Adjusts sample sizes for finite population, clustering and response rate.

Input Values

Specify input values and click Calculate. Hover over for help.

  0.95

Note: You may adjust the calculated sample size for t-distribution (applied by default), clustering, response rate or finite population using the 'Adjust' button.


Influence of Changing Input values on Sample Size Estimates

Customize Visualisation

Customize the plot by changing input values from here.

From Min
To Max
By
1st Series
2nd Series
3rd Series

Note: You may adjust the calculated sample size for t-distribution (applied by default), clustering, response rate or finite population using the 'Adjust' button.

Visualisation

This visualisation assumes a 95% level of confidence and plots sample sizes for three precision levels for a range of standard deviation values. You may change the default values from the 'Customize Visualisation' panel.

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Table of Sample Sizes at a range of Standard Deviations and Precision values

Customize Table

Customize the table by changing input values from here.

From Min
To Max
By
From Min
To Max
By

Note: You may adjust the calculated sample size for t-distribution (applied by default), clustering, response rate or finite population using the 'Adjust' button.

Sample Size Table

This table shows sample sizes for a range of proportion and precision levels. You may change the default input values from the panel on the left.

Download Table