Question

(06.03)

A student wants to report on the number of books her friends read each week. The collected data are

below:

0 24 1 4 5 2 5 4

Which measure of center is most appropriate for this situation and what is its value? (2 points)

O Median; 2.

Median; 4

CE O

Mean; 2

O Mean: 4

Answer 1

median 4

Explanation:

Answer 2

Median is best suitable, it = 4

Explanation:

Median is best suitable as this data' measure of central tendency. As, mean is suitable in a normally distributed data. But, in skewed (uneven) distributions, where outliers exist, median is more suitable - as it is positional average, not effected by extreme values ie outliers.

Median :

Ascending order : 0 , 1 , 2 , 2 , 4 , 4 , 4 , 5 , 5

Number (N) = 9. So, median = (N+1/ 2)th observation

= { (9 +1) / 2 } th = (10 / 2)th = 5th observation = 4