Concept explainers
The average residential electrical power use (in hundreds of watts) per hour is given in the following table.
Hour | Power | Hour | Power |
1 | 8 | 13 | 12 |
2 | 6 | 14 | 13 |
3 | 5 | 15 | 14 |
4 | 4 | 16 | 15 |
5 | 5 | 17 | 17 |
6 | 6 | 18 | 19 |
7 | 7 | 19 | 18 |
8 | 8 | 20 | 17 |
9 | 9 | 21 | 16 |
10 | 10 | 22 | 16 |
11 | 10 | 23 | 13 |
12 | 11 | 24 | 11 |
- Compute the average total energy used in a day in kilowatt-hours (kWh).
- If a ton of coal generates 1842 kWh, how long does it take for an average residence to burn a ton of coal?
Explain why the data might fit a plot of the form
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