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A local car dealership advertises cars that get the following miles per gallon:15, 22, 36, 30, 38, 21 Find the variance. (Round your answer to the nearest hundreth.)

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first find out the average
@tana you are required to calculate the average first

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Other answers:

how you have calculated the average???
average is total / number
duhh i added them to get the "TOTAL NUMBER "
\[Average = {{15+22+36+30+38+21 }\over{6}}\]
so average is???
\[Average = {{15+22+36+30+38+21 }\over{6}}={{162}\over{6}}=27\]
tana do u know about variance
Miles/Gallon Deviation Deviation^2 15 -12 144 22 -5 25 36 9 81 30 3 9 38 11 121 21 -6 36 27=average variance= 69.33333333
is this your variance???

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