Sample Size Determination
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Estimation of Pearson Correlation Coefficient with specified precision.
This utility can be used to calculate required sample size when your objective is to estimate Pearson Correlation Coefficient with a specified precision.
Formula used and other details
Confidence Level %
Enter number between 1 to 99
Required
In percentage. Commonly used values are 95, 99 and 90. Should be between 0.01 to 99.99.
Allowable error or Precision
Enter positive number between 0.01 and 99.99
Required
Margin of error towards both sides of Correlation Coefficient (In percentage).
Your guesstimate of Correlation Coefficient
Enter postive number > 0
Required
Approxiate estimate of Correlation Coefficient based on previous studies / pilot studies etc.
Sample Size Required =