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Find the mean, variance and standard deviation for the numbers 4, 6, 10, 12, 7, 8, 13, 12.

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Find the mean, variance and standard deviation for the numbers 4, 6, 10, 12, 7, 8, 13, 12.

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Given data: 4, 6, 10, 12, 7, 8, 13, 12

Sum of observations = 4 + 6 + 10 + 12 + 7 + 8 + 13 + 12 = 72

Total number of observation = 8

Find Mean:

Mean = (Sum of observations) / (Total number of observation)

= 72/8 = 9

Mean = 9

Find Variance:

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