Table 1. Annual Electricity Consumption Percentiles by Household Income, 1997
(kilowatthours per household)
| |
5th percentile |
10th percentile |
25th percentile |
median |
75th percentile |
90th percentile |
95th percentile |
| All Households |
2,287 |
3,167 |
5,056 |
8,370 |
13,485 |
19,866 |
24,436 |
Household
Income |
|
| Less than 10,000 Dollars |
1,577 |
2,033 |
3,297 |
5,704 |
9,432 |
14,994 |
19,537 |
| 10,000 to 14,999 Dollars |
1,778 |
2,250 |
3,798 |
6,313 |
10,249 |
15,780 |
20,878 |
| 15,000 to 19,999 Dollars |
2,125 |
2,965 |
4,452 |
7,688 |
12,313 |
17,148 |
20,451 |
| 20,000 to 24,999 Dollars |
2,324 |
3,311 |
4,823 |
8,065 |
12,706 |
18,881 |
23,032 |
| 25,000 to 34,999 Dollars |
2,774 |
3,358 |
5,210 |
7,922 |
12,534 |
17,845 |
21,853 |
| 35,000 to 49,999 Dollars |
2,916 |
3,843 |
5,569 |
9,166 |
13,770 |
19,943 |
24,532 |
| 50,000 to 74,999 Dollars |
3,126 |
4,360 |
6,852 |
10,589 |
16,335 |
22,406 |
26,571 |
| More than 75,000 Dollars |
4,047 |
5,000 |
7,777 |
11,814 |
18,044 |
26,207 |
30,556 |
Graph of data
Notes: The data in this table are for households that used electricity.
The percentiles describe the distribution of household electricity consumption data; for example, 25% of households with incomes less than 10,000 dollars consumed less than 3,297 kilowatthours (kWh) and 75% consumed more than that amount.
Source: 1997 Residential Energy Consumption Survey.
Return to: “Median Values and Percentiles for Household Energy Data”
Table 2. Mean Annual Electricity Consumption by Household Income, 1997
(kilowatthours per household)
| |
Electricity Consumption per Household
(kWh) |
Relative Standard Error (percent) |
Standard Error (kWh) |
95% confidence level lower bound (kWh) |
95% confidence level upper bound (kWh) |
| All Households |
10,219 |
1.4 |
430 |
9,939 |
10,499 |
| Household Income |
|
| Less than 10,000 Dollars |
7,372 |
4.8 |
354 |
6,678 |
8,065 |
| 10,000 to 14,999 Dollars |
7,975 |
3.8 |
303 |
7,381 |
8,568 |
| 15,000 to 19,999 Dollars |
9,031 |
3.4 |
307 |
8,429 |
9,633 |
| 20,000 to 24,999 Dollars |
9,963 |
4.6 |
458 |
9,065 |
10,862 |
| 25,000 to 34,999 Dollars |
9,652 |
2.3 |
222 |
9,217 |
10,087 |
| 35,000 to 49,999 Dollars |
10,697 |
2.5 |
267 |
10,173 |
11,221 |
| 50,000 to 74,999 Dollars |
12,265 |
2.8 |
343 |
11,592 |
12,938 |
| More than 75,000 Dollars |
13,988 |
2.8 |
392 |
13,220 |
14,755 |
Graph of data
Notes: The data in this table are for households that used electricity.
The standard error is a measure of sampling error and can be used to calculate a confidence range. For example, the estimate for electricity consumption for households with incomes less than 10,000 dollars is 7,372 kilowatthours (kWh) and the standard error is 354 kWh. The 95% confidence interval is calculated by multiplying 1.96 times the standard error, and the 95% confidence range is 6,678 kWh to 8,065 kWh.
Source: 1997 Residential Energy Consumption Survey.
Return to: “Median Values and Percentiles for Household Energy Data”
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