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.
And here they are graphically: You can calculate the rest of the z-scores yourself! Here is the formula for z-score that we have been using: 1  z is the z-score (Standard Score). 2  x is the value to be standardized. 3  Î¼ is the mean. 4  Ï is the standard deviation.ou can calculate the rest of the z-scores yourself! Here is the formula for z-score that we have been using: 1  z is the z-score (Standard Score). 2  x is the value to be standardized. 3  Î¼ is the mean.