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

2

step-by-step explanation:

1+1=2

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction