![]() How to Calculate Weighted Standard Deviation in Excelīackground: Hilary is taking a college statistics course. N is the sample size (the number of observations). Σ is a Greek letter called sigma which represents ‘sum’ and Where w i are the weights corresponding to each individual observation The weighted standard deviation is calculated using the formula: The weighted standard deviation is calculated based on the weighted mean and it attaches more importance to data that have more weight than to data with less weight. Weighted Standard Deviation measures the spread of a data distribution from the mean where some of the data are more significant than others. ![]() It measures the average distance of each data point from the mean of the dataset. ![]() Standard Deviation measure the spread of a data distribution.
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