Adimas found the mean of her 11 math test scores for the first semester. x = StartFraction (76 + 87 + 65 + 88 + 67 + 84 + 77 + 82 + 91 + 85

Question

Adimas found the mean of her 11 math test scores for the first semester. x = StartFraction (76 + 87 + 65 + 88 + 67 + 84 + 77 + 82 + 91 + 85 + 90) Over 11 EndFraction = StartFraction 892 Over 11 EndFraction ≈ 81 Using 81 as the mean, find the variance of her grades rounded to the nearest hundredth. σ2 = Find the standard deviation of her grades rounded to the nearest hundredth. σ =

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Piper 2 weeks 2021-09-10T11:35:02+00:00 2 Answers 0

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    0
    2021-09-10T11:36:24+00:00

    Answer:

    71.36 and 8.45

    Step-by-step explanation:

    0
    2021-09-10T11:36:37+00:00

    Answer:

    σ2 =71.36

    σ = 8.45

    Step-by-step explanation:

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45:7+7-4:2-5:5*4+35:2 =? ( )