Enter the Step 3 score, mean Step 3 score, and standard deviation of Step 3 scores into the calculator to determine the percentile rank.

Step 3 Percentile Formula

The following formula is used to calculate the Step 3 Percentile.

P = (S - M) / SD

Variables:

  • P is the percentile rank S is the Step 3 score M is the mean Step 3 score SD is the standard deviation of Step 3 scores

To calculate the Step 3 Percentile, subtract the mean Step 3 score from the individual's Step 3 score. Then, divide the result by the standard deviation of Step 3 scores. The result is the percentile rank of the individual's Step 3 score.

What is a Step 3 Percentile?

A Step 3 Percentile is a statistical measure used in the United States Medical Licensing Examination (USMLE) Step 3 test to compare a candidate's performance to others. It indicates the percentage of test takers who scored lower than a particular score. For example, if a candidate's Step 3 Percentile is 90, it means that 90% of the test takers scored lower than this candidate. This percentile is used to evaluate a candidate's knowledge and skills in relation to the practice of medicine unsupervised.

How to Calculate Step 3 Percentile?

The following steps outline how to calculate the Step 3 Percentile using the given formula:


  1. First, determine the Step 3 score (S).
  2. Next, determine the mean Step 3 score (M).
  3. Next, determine the standard deviation of Step 3 scores (SD).
  4. Next, gather the formula from above = P = (S - M) / SD.
  5. Finally, calculate the Step 3 Percentile (P).
  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:

Step 3 score (S) = 220

Mean Step 3 score (M) = 200

Standard deviation of Step 3 scores (SD) = 15