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Compute CI of a sum, difference, quotient or product

This calculator computes confidence intervals of a sum, difference, quotient or product of two means, assuming both groups follow a Gaussian distribution.

1. Choose data entry format

Enter mean, N and SD.
Enter mean, N and SEM.
    Caution: Changing format will erase your data.

2. Enter data

Variable name Mean SD N

3. Which operation?

Calculate the confidence interval of:
      A + B
      A - B
      A / B
      A * B

4. View the results