A sample of 6 patients was placed on Diet A and 6 on Diet B. The weight losses ( in kg) for each group are: Diet A: 3.7 4.5 7.7 7.8 8.2 10.1. Diet B: 3.7 6.8 6.9 7.2 7.3 10.1. Calcualte the standard deviation of the wieght losses for each group. Explain why the standard deviation for Diet B comes out less than that for Diet A even though the range of weight losesses is the same for each group

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