Question

The mileages (in thousands) of a sample of 12 cars from a rental car company’s fleet are: 6 14 3 7 11 13 8 5 10 9 12 9

The mean mileage (in thousands) equals: [A] 8.44 [B] 8.92 [C] 9 [D] 9.5

The mode of the sample equals: [A] 8 [B] 9 [C] 10 [D] does not exist

The lower (first) quartile equals: [A] 6.25 [B] 6 [C] 5.5 [D] 5

The variance of the sample equals: [A] 3.32 [B] 11.09 [C] 10.08 [D] 10.99

The range equals: [A] 11 [B] 7 [C] 14 [D] 3

The interquartile range equals: [A] 8 [B] 5.5 [C] 11 [D] 4.5

Answer 1