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=

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

step-by-step explanation:

the true statements are:

r = set of real numbers

n = set of natural numbers, 1,2,

w = n u{0} = {0,1,}