Question

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.)

Answer 1

first find out the average

Answer 2

162

Answer 3

@tana you are required to calculate the average first

Answer 4

how you have calculated the average???

Answer 5

added

Answer 6

average is total / number

Answer 7

duhh i added them to get the "TOTAL NUMBER "

Answer 8

\[Average = {{15+22+36+30+38+21 }\over{6}}\]

Answer 9

so average is???

Answer 10

144.5

Answer 11

\[Average = {{15+22+36+30+38+21 }\over{6}}={{162}\over{6}}=27\]

Answer 12

tana do u know about variance

Answer 13

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

Answer 14

no

Answer 15

is this your variance???

Answer 16

idk