Sample Variance Grouped Data
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Sample Variance Grouped Data. Learn more in this extensive guide. In this leaflet we extend the definitions of variance and standard deviation to data which has been grouped.
Learn more in this extensive guide.
Population variance and standard deviation for grouped data. In probability theory and statistics, the variance formula measures how far a set of numbers are spread out. This is, we don't really know all the scores, one by one. Unlike range and interquartile range, variance is a measure of dispersion that takes into account the spread of all data points in a data .