Because thyroid disorders can cause changes in menstrual cycle and mood, the symptoms are sometimes mistaken for menopause. If a thyroid problem is suspected, a simple blood test can determine whether the true culprit is menopause or a thyroid disorder -- or a combination of the two.
In statistics, the standard score is the (signed) number of standard deviations an observation or datum is above the mean. Thus, a positive standard score indicates a datum above the mean, while a negative standard score indicates a datum below the mean.hus, a positive standard score indicates a datum above the mean, while a negative standard score indicates a datum below the mean.
The normal random variable of a standard normal distribution is called a standard score or a z-score. Every normal random variable X can be transformed into a z score via the following equation: z = (X - Î¼) / Ï. where X is a normal random variable, Î¼ is the mean of X, and Ï is the standard deviation of X.he standard normal distribution is a special case of the normal distribution. It is the distribution that occurs when a normal random variable has a mean of zero and a standard deviation of one.