Enter the sample size, mean, and standard deviation into the calculator to determine the acceptance value. The acceptance value is a statistical measure used to assess the quality of a batch of products.

Acceptance Value Formula

The following formula is used to calculate the acceptance value (AV):

AV = x̄ + (k * σ / √n)

Variables:

  • AV is the acceptance value
  • x̄ is the mean of the sample data
  • σ is the standard deviation of the sample data
  • n is the sample size
  • k is the acceptance constant (typically 2.4 for a 90% confidence level)

To calculate the acceptance value, multiply the standard deviation by the acceptance constant and divide by the square root of the sample size. Then, add this value to the mean of the sample data.

What is an Acceptance Value?

An acceptance value is a calculated value used to determine whether a batch of products meets the predefined criteria for quality control. It is based on the sample’s mean and standard deviation and is adjusted by a constant that reflects the desired confidence level. The acceptance value helps in making decisions about whether to accept or reject a batch of products based on statistical analysis.

How to Calculate Acceptance Value?

The following steps outline how to calculate the Acceptance Value.


  1. First, determine the mean (x̄) of the sample data.
  2. Next, determine the standard deviation (σ) of the sample data.
  3. Next, determine the sample size (n).
  4. Use the acceptance constant (k), typically 2.4 for a 90% confidence level.
  5. Finally, calculate the Acceptance Value (AV) using the formula: AV = x̄ + (k * σ / √n).
  6. 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.

Sample Size (n) = 30

Mean (x̄) = 50

Standard Deviation (σ) = 4