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.

## 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:

1. First, determine the difference of the means of two sets.
• The difference of the means of two sets is given as: 5.
2. Next, determine the standard error of difference.
• The standard error of difference is provided as: 2.5.
3. 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