If the standard deviation of 10 scores is zero, then all scores are the same.
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Since the standard deviation is zero, the scores are all the same. And, since their mean is 10, they must all be 10.
T scores are also standardized norm scores, where the mean value is 50 and standard deviation value is 10, in contrast to Z scores where mean value is "0" and standard deviation value is 1. -Rama Reddy Karri
Mean = 0 Standard Deviation = 1
Mean 0, standard deviation 1.
No.