Law enforcement can provide a stable, interesting career for young people or those looking to change to a new field. Finding employment as a cop usually involves passing written and physical tests, undergoing a background check and graduating from police academy training. Many states also administer the Police Officer Selection Test (POST), which gauges an applicant's ability to perform the jobs of a police officer competently. T-scores are a method of statistically analyzing standardized tests and can be applied to the POST exam.

Find the standard deviation based on the population size (the number of people who took the exam).

Look at the distribution in bar graph form of the T-scores to gauge how well or poorly the sample set fared.

Represent T-scores as a scatter plot for another visual analysis. This shows the relationship between individual scores and the performance of the group as a whole.

Compare your score to the maximum T-score, which is 77.8. Minimum scores for passing vary state by state.