![]() The STDEV.P function is entered in cell D3, here is how the function calculates the output: How is the output from the STDEV.P function calculated? Standard deviation is used in statistics. Chart A has a standard deviation of 23.45256334, standard deviation for chart B is 5.207075606. Both charts above have numbers and an average plotted, they share the same average however, the numbers are not the same.Ĭhart A above shows that the values are more spread out than the values in chart B. Standard deviation tells you how far from the average values are spread out. The STDEV.P function ignores logical values and text values.įor large sample sizes, STDEV.S and STDEV.P return approximately equal values. The first number argument that represents a population.
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