The common symptoms of an overactive thyroid are weight loss, increased appetite, irritability, rapid heart rate and anxiety, according to the Office on Women's Health, whereas underactive thyroid symptoms include weight gain, cold sensitivity, fatigue, depression and muscle weakness.
Z-Scores Explained. A z-score is a score that falls somewhere within the standard normal distribution. Its counterpart on the standard distribution is the standard score. The standard normal distribution and z-score allow all the standardized scores to be weighed equally through a few calculations. z-score is a score that falls somewhere within the standard normal distribution. Its counterpart on the standard distribution is the standard score. The standard normal distribution and z-score allow all the standardized scores to be weighed equally through a few calculations.
1. Odd-numbered T scores fall between Standard Scores. For instance, a T score of 49 is equivalent to a z-score of -0.10, and a standard score of 98.5. Stanford-Binet Intelligence Scale, 4 th ed. and Other Tests Using Standard Scores with a Mean of 100 and SD 16 . Z-scores (z), Percentile Ranks (PR), Composite and Area Standard Scores (SAS [1]) (Mean = 100 s.d. = 16), Subtest Standard Scores (sas) (Mean = 50, s.d. = 8), and Stanines (9)