Question

Amar surveyed six friends, asking each how many times he or she had ridden in a helicopter. The numbers of times she recorded were 0, 0, 0, 1, 3, and 8.

What is the mean absolute deviation of the number of times?

Round to the nearest tenth, if needed.

0

2

2.3

2.5

Answer 1

the answer is 2, because 1 plus 3, plus 8, plus three 0 is twelve. if you divide this by six, you get 2.

Answer 2

Hence to the nearest tenth mean absolute deviation is:

2.3

Explanation:

We are given a set of data points as:

The numbers of times she recorded were

0, 0, 0, 1, 3, and 8

on finding the mean we have:

`Mean=(0+0+0+1+3+8)/(6)\\\\Mean=(12)/(6)\\\\Mean=2`

Hence, now we subtract each data point from mean and find their absolute value as:

|0-2|= 2

|0-2|=2

|0-2|=2

|1-2|=1

|3-2|=1

|8-2|=6

Hence now the mean of these absolute value is called Mean absolute Deviation (MAD)

`MAD=(2+2+2+1+1+6)/(6)\\\\MAD=(14)/(6)\\\\MAD=2.333`

Hence to the nearest tenth mean absolute deviation is:

2.3