Variance Example. Working Out The Variance From A Frequency Table Using The Variance Formula
4:29
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Variance Example. Working Out The Variance From A Frequency Table Using The Variance Formula
In this video you will be shown how to work out the variance from a frequency table. First you need to make columns for fx (frequence multiplied the data values) and fx^2 (the frequency multiplied by the square of the data values. Then work out sigma fx and sigmas fx^2 (these are the sums of the columns that you have just made). Then to get the ...
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