## 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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2021-09-10T11:35:02+00:00
2021-09-10T11:35:02+00:00 2 Answers
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## Answers ( )

Answer:71.36 and 8.45

Step-by-step explanation:Answer:σ2 =71.36

σ = 8.45

Step-by-step explanation: