Students Q and A

Z-score

Z-score

by Prety Akter -
Number of replies: 1
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How can we define standard deviation???    

In reply to Prety Akter

Re: Z-score

by Tasnim Taofiq Simin -
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Tasnim Taofiq Simin 

ID : 192-34-973

Answer : Standard deviation is the measure of dispersion of a set of data from it's mean. Standard deviation is a statistic that measures the dispersion of a data set relative to it's mean and is calculated as the square root of the variance. It is calculated as the square root of variance by determining the variation between each points are further from the mean, there is a more spread out the data,  the higher the standard deviation.