Chapter 1.3, Problem 97E

(a)

To determine

To calculate the range of given data.

Answer to Problem 97E

Range = 24

Explanation of Solution

Given:

86	84	91	75	78	80	74
87	76	96	82	90	98	93

Formula used:

  $\text{Range = Highest value - Lowest value}$

Calculation:

  $\begin{array}{c}\text{Range = Highest value - Lowest value}\\ \text{= 98 - 74}\\ \text{= 24}\end{array}$

(b)

To determine

To interpret the range value of given data.

Explanation of Solution

The range is the difference between lowest and highest value of the dataset, which shows that all the data values falls within 24 values or between the highest and lowest values.