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1 June, 07:31

Adimas found the mean of her 11 math test scores for the first semester.

(76 + 87 + 65 + 88 + 67 + 84 + 77 + 82 + 91 + 85 + 90)

892

11

11

81

Using 81 as the mean, find the variance of her grades rounded to the nearest hundredth.

02=

Find the standard deviation of her grades rounded to the nearest hundredth.

O=

+1
Answers (2)
  1. 1 June, 08:17
    0
    71.36

    8.45 this is the answers
  2. 1 June, 11:13
    0
    Using 81 as the mean, find the variance of her grades rounded to the nearest hundredth.

    σ2 = 71.36

    Find the standard deviation of her grades rounded to the nearest hundredth.

    σ = 8.45
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