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 consumed less than 5,056 kWh and 75% consumed more than that amount.
Source: 1997 Residential Energy Consumption Survey.
 

Table 2. Mean Annual Electricity Consumption, 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

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 is 10,219 kWh and the standard error is 430 kWh. The 95% confidence interval is calculated by multiplying 1.96 times the standard error, and the 95% confidence range is 9,939 kWh to 10,499 kWh.
Source: 1997 Residential Energy Consumption Survey.

Return to: “Median Values and Percentiles for Household Energy Data”