A biologist measures the heights, in centimeters, of five seedlings in a laboratory. The h… — SAT

A biologist measures the heights, in centimeters, of five seedlings in a laboratory. The heights are $12$ , $15$ , $8$ , $21$ , and $14$ . What is the range, in centimeters, of these heights?

Answer: 13 centimeters

Answer

To find the range of a dataset, subtract the minimum value from the maximum value. In the given dataset of seedling heights (

12

15

8

21

, and

14

), the maximum height is

21

centimeters and the minimum height is

8

centimeters. Calculating the difference gives

21 - 8 = 13

centimeters.

Step-by-Step Solution

Identify the maximum and minimum values in the dataset.

The maximum value is

21

and the minimum value is

8

The range is defined as the difference between the largest (maximum) and smallest (minimum) values in a data distribution.

Subtract the minimum value from the maximum value to calculate the range.

21 - 8 = 13

Subtracting the minimum value of

8

from the maximum value of

21

yields the range of the dataset.

Key Concept

The range of a dataset measures the spread of the data and is calculated by subtracting the minimum value from the maximum value.

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