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.
There is also a direct relationship between standard scores and percentile ranks so that a standard score of 100 corresponds to a percentile rank of 50; a standard score of 90 is the same as a percentile rank of 25; and a standard score of 110 is the same as a percentile rank of 75.n this case, average performance typically falls between standard scores of 90 and 110. The farther away from that range, the more different a student s score is from the middle performance. Another statistically derived score is Percentile Ranks.