what is standard deviation?

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Uma Pratyusha's picture

Answer: 
It is the square root of its variance in statistics. ref: http://www.investopedia.com/terms/s/standarddeviation.asp

Regards

Uma Prathyusha

VOLETI VIJAYA KUMAR's picture

Answer: 
Standard deviation is a widely used measurement of variability or diversity used in statistics and probability theory. It shows how much variation or "dispersion" there is from the "average" (mean, or expected/budgeted value). A low standard deviation indicates that the data points tend to be very close to the mean, whereas high standard deviation indicates that the data are spread out over a large range of values.

VIJAYA KUMAR.VOLETI M.Pharmacy

Asst Professor

Raos college of Pharamcy

Nellore

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