<prompt> Normal standard detion true is-Mean MedianMean MedianMedian MeanMode Mean  <response>: Repeated question the standard detion SD, also represented by the Greek letter sigma s or the Latin letter s is a measure that is used to quantify the amount of variation or dispersion of a set of data values. A low standard detion indicates that the data points tend to be close to the mean also called the expected value of the set, while a high standard detion indicates that the data points are spread out over a wider range of values 