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Ages of the first 6 presidents are 57,61,57,57,58,57. How many presidents fall within one standard deviation of the mean

Ages of the first 6 presidents are 57,61,57,57,58,57. How many presidents fall within one standard deviation of the mean
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Ages of the first 6 presidents are 57,61,57,57,58,57. How many presidents fall within one standard deviation of the mean

User Blair Zajac
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Find the mean of the data set (57+61+57+57+58+57)/6 = 347/6 = 57.83
User Coolpasta
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4 presidents fall within one standard deviations of the mean 57
User Guido Simone
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