Chapter 12.2, Problem 1BCYP

To determine

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

Answer to Problem 1BCYP

  $\text{Mode = 1020}$

Explanation of Solution

Given: In a survey, students between the ages thirteen and eighteen reported where they get books.

The responsive were:

  $\begin{array}{cc}\text{Teachers}& 420\\ \text{School Library}& 1320\\ \text{Public Library}& 1020\\ \text{Parents}& 720\\ \text{bookstore}& 1020\\ \text{Internet}& 540\\ \text{Friends}& 540\\ \text{Gift}& 1020\end{array}$

First arrange the data in ascending order.

420,540,540,720,1020,1020,1020,1320

Now find mean, median and mode.

Mean $=825$

Median $=870$

Mode = 1020

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