STDEVPis used when the group of numbers being evaluated is complete - it's the entire population of values. In this case, the1is NOT subtracted and the denominator for dividing the sum of squared deviations is simplyNitself, the number of observations (a count of items in the data set)....
STDEVis used when the group of numbers being evaluated are only a partial sampling of the whole population. The denominator for dividing the sum of squared deviations isN-1, whereNis the number of observations (a count of items in the data set). Technically, subtracting the1is referred to a...
STDEVPis used when the group of numbers being evaluated is complete - it's the entire population of values. In this case, the1is NOT subtracted and the denominator for dividing the sum of squared deviations is simplyNitself, the number of observations (a count of items in the data set)....