What is the standard deviation for T-Scores?

The standard deviation for T-scores is 10. T-scores are a type of standardized score used to compare an individual's score to a population average, typically with a mean of 50 and a standard deviation of 10. This standardization process allows for an easier interpretation of scores within the context of a population, where the T-score indicates how many standard deviations a particular score is from the mean. Hence, having a standard deviation of 10 is intrinsic to the T-score metric, making it a critical element for comparing individual results to normative data effectively.