Enter the number of essentials for an item and the number of experts into the Calculator. The calculator will evaluate the Content Validity Ratio. 

Content Validity Ratio Formula

CVR = (Ne - (N/2))/ (N/2)

Variables:

  • CVR is the Content Validity Ratio ()
  • Ne is the number of essentials for an item
  • N is the number of experts

To calculate the Content Validity Ratio, subtract half the number of experts from the number of essentials for an item, then divide by half the number of experts.

How to Calculate Content Validity Ratio?

The following steps outline how to calculate the Content Validity Ratio.

  1. First, determine the number of essentials for an item. 
  2. Next, determine the number of experts. 
  3. Next, gather the formula from above = CVR = (Ne – (N/2))/ (N/2).
  4. Finally, calculate the Content Validity Ratio.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

number of essentials for an item = 5

number of experts = 2