Table 1. Annual Electricity Consumption Percentiles by Type of Housing Unit, 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 |
Type of
Housing Unit |
|
| Mobile Home |
3,236 |
3,994 |
6,059 |
10,227 |
16,228 |
21,815 |
24,836 |
Single-Family,
Detached |
3,408 |
4,310 |
6,414 |
9,942 |
15,120 |
21,812 |
26,900 |
Single-Family,
Attached |
2,149 |
2,841 |
3,993 |
6,542 |
10,501 |
16,726 |
19,533 |
Multifamily,
2 to 4 Units |
1,487 |
1,839 |
3,071 |
4,988 |
8,615 |
12,938 |
16,602 |
Multifamily,
5 or More Units |
1,579 |
1,903 |
2,864 |
4,713 |
7,777 |
12,069 |
14,733 |
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 living in mobile homes consumed less than 6,059 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 Type of Housing Unit, 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 |
Type of
Housing Unit |
|
| Mobile Home |
11,739 |
4.0 |
470 |
10,818 |
12,659 |
Single-Family,
Detached |
11,778 |
1.6 |
188 |
11,409 |
12,147 |
Single-Family,
Attached |
8,071 |
3.9 |
315 |
7,454 |
8,688 |
Multifamily,
2 to 4 Units |
6,505 |
5.3 |
345 |
5,829 |
7,181 |
Multifamily,
5 or More Units |
5,990 |
4.2 |
252 |
5,497 |
6,483 |
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 mobile homes is 11,739 kWh and the standard error is 470 kWh. The 95% confidence interval is calculated by multiplying 1.96 times the standard error, and the 95% confidence range is 10,818 kWh to 12,659 kWh.
Source: 1997 Residential Energy Consumption Survey.
Return to: “Median Values and Percentiles for Household Energy Data”
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