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Standard deviation is how much a group deviates from the whole. In order to calculate standard deviation, you must know the mean.
in order to calculate the mean of the sample's mean and also to calculate the standard deviation of the sample's
the mean and the standard deviation
There is insufficient information in the question to answer it. In order to compute a mean and a standard deviation, you need at least two data points, but the question only gave one. Please restate the question.
no the standard deviation is not equal to mean of absolute distance from the mean