To find: The standard deviation of the given data to the nearest hundredth.
The standard deviation is 7.67.
Given:
The daily water usage in gallons for 2 weeks is as shown in the table below:
92.3 | 81.3 |
85.3 | 81.6 |
89.7 | 76.9 |
101.2 | 94.0 |
80.3 | 89.6 |
91.4 | 96.3 |
88.8 | 102.1 |
Concept used:
The standard deviation of an ungrouped data is,
Calculation:
The mean of the given data is,
Now the square of the deviations from the mean are,
Now the sum of these squared deviations is,
Now the standard deviation is,
Chapter 13 Solutions
High School Math 2015 Common Core Algebra 2 Student Edition Grades 10/11
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