Chapter 12.2, Problem 1ACYP

To determine

To find: The best measure central tendency of the data.

Answer to Problem 1ACYP

  $\text{Median = 81}\text{.5}$

Explanation of Solution

Given: An electronic store records the number of customer it has during each hour of the day.

  $\begin{array}{c}\text{Number of Customers}\\ \begin{array}{cccc}86& 71& 79& 86\\ 79& 32& 88& 86\\ 82& 69& 71& 70\\ 86& 81& 85& 86\end{array}\end{array}$

First arrange the data in ascending order.

32,69,70,71,71,79,79,81,82,85,86,86,86,86,86,88

Now find mean, median and mode.

Mean $=77.31$

Median $=81.5$

Mode = 86

Therefore, the median is best represents the central tendency of data.