Enter the difference of the means of two sets and the standard error of difference into the Critical Ratio Calculator. The calculator will evaluate and display the Critical Ratio.

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## Critical Ratio Formula

The following formula is used to calculate the Critical Ratio.

CRC = M / SE

- Where CRC is the Critical Ratio
- M is the difference of the means of two sets
- SE is the standard error of difference

To calculate the critical ratio, divide the difference between the means of the sets, then divide by the standard error of difference.

## How to Calculate Critical Ratio?

The following example problems outline how to calculate Critical Ratio.

Example Problem #1:

- First, determine the difference of the means of two sets.
- The difference of the means of two sets is given as: 5.

- Next, determine the standard error of difference.
- The standard error of difference is provided as: 2.5.

- Finally, calculate the Critical Ratio using the equation above:

CRC = M / SE

The values given above are inserted into the equation below and the solution is calculated:

CRC = 5 / 2.5 = 2.00

Example Problem #2:** **

For this problem, the variables required are provided below:

difference of the means of two sets = 6

standard error of difference = 4.3

Test your knowledge using the equation and check your answer with the calculator above.

CRC = M / SE** = ?**