Table 1. Annual Natural Gas Consumption Percentiles by Census Division, 1997
(thousand cubic feet per household)
  5th percentile 10th percentile 25th percentile   median   75th percentile 90th percentile 95th percentile
All Households 12 22 43 74 113 154 188
Census Division  
New England 4 8 41 83 123 151 166
Middle Atlantic 3 5 40 80 119 161 190
East North Central 38 58 79 114 149 194 218
West North Central 32 51 72 97 128 165 213
South Atlantic 13 19 33 57 87 109 146
East South Central 13 22 39 56 86 123 152
West South Central 20 27 43 61 88 114 135
Mountain 17 22 43 70 103 133 160
Pacific 14 20 28 47 66 89 113
Graph of data

Notes: The data in this table are for households that used natural gas.
The percentiles describe the distribution of household natural gas consumption data; for example, 25% of households in New England consumed less than 41 thousand cubic feet 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 Natural Gas Consumption by Census Division, 1997
(thousand cubic feet per household)
  Natural Gas Consumption per Household
(1,000 cf)		 Relative Standard Error (percent) Standard Error
(1,000 cf)		 95% confidence level lower bound (1,000 cf) 95% confidence level upper bound (1,000 cf)
All Households 83 1.8 1 80 86
Census Division
New England 85 5.3 4 76 94
Middle Atlantic 85 4.2 4 78 92
East North Central 119 1.4 2 116 123
West North Central 104 6.7 7 91 118
South Atlantic 65 8.9 6 53 76
East South Central 67 8.7 6 56 79
West South Central 68 8.6 6 57 80
Mountain 77 6.6 5 67 87
Pacific 53 4.5 2 48 57
Graph of data

Notes: The data in this table are for households that used natural gas.
The standard error is a measure of sampling error and can be used to calculate a confidence range. For example, the estimate for natural gas consumption for households in New England is 85 thousand cubic feet (cf) and the standard error is 4 thousand cf. The 95% confidence interval is calculated by multiplying 1.96 times the standard error, and the 95% confidence range is 76 thousand cf to 94 thousand cf.
Source: 1997 Residential Energy Consumption Survey.

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