Question

Blood alcohol concentrations of drivers involved in fatal crashes and then given jail sentences are shown below. Find the mean, median, and mode of the listed numbers. Is there a mode?

0.28 0.17 0.17 0.16 0.13 0.23 0.30 0.23 0.14 0.16 0.11 0.16

Answer 1

Mean amount of blood concentration

Sorting the values in ascending order of magnitude, we get

0.11, 0.13, 0.14, 0.16, 0.16, 0.16, 0.17, 0.17, 0.23, 0.23, 0.28, 0.30

Number of observations = 12

Median will be middlemost value of th observation and th observation.

Here,

6^th observation = 0.16 and 7^th observation = 0.17

Median

To find mode,

frequency of value 0.16 is = 3 which is greater than frequency of any other values.

So, mode = 0.16