What does a T-score of 65 indicate?

A T-score is a standardized score that indicates how far a person's score is from the mean in terms of standard deviations, with a mean T-score typically set at 50 and a standard deviation of 10. Therefore, a T-score of 65 reflects a performance that is significantly higher than the average. Specifically, it is 1.5 standard deviations above the mean.

This high T-score suggests that an individual performed better than many others in the group being assessed, indicating above-average performance. The numerical interpretation means that if the distribution of scores is normal, only about 7.5% of the population would be expected to score at or above a T-score of 65. Therefore, the correct understanding of a T-score of 65 in this context directly correlates to one’s performance being well above average.

A T-score of 65 is not below average, does not relate to being 2 standard deviations below the mean, and does not signify a mean score. Rather, it clearly serves to indicate a notable level of achievement in comparison to peers.