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T-Scores

Definition

T-scores are standardized scores that represent how many standard deviations an individual data point is away from the mean, using the sample standard deviation.

Analogy

Think about t-scores as comparing your height to other students in your class. If you are taller than most students, your t-score will be positive because you are above average. If you are shorter than most students, your t-score will be negative because you are below average.

Related terms

Z-Scores: Z-scores are standardized scores that represent how many standard deviations an individual data point is away from the mean, using the population standard deviation.

Standard Deviation: Standard deviation measures how spread out or dispersed data points are around their mean.

Normal Distribution: A normal distribution is a symmetric bell-shaped probability distribution where most values cluster around the mean.



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© 2024 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.