1960 Approximate Standard Errors (Tables E-H)

Table E. Approximate Standard Error of Estimated Percentage for Housing and Household Characteristics and for Population Characteristics of Type I Based on Samples Selected at 1-in-100, 1-in-1,000, and 1-in-10,000

Estimated Percentage: 1/100 10 25 50 100 250 500 1,000 2,500 5,000
1/1,000 100 250 500 1,000 2,500 5,000 10,000 25,000 50,000
1/10,000 1,000 2,500 5,000 10,000 25,000 50,000 100,000 - Not applicable -
1 or 99 0.9 0.5 0.4 0.3 0.2 0.1 0.1 0.1 *
2 or 98 1.2 0.8 0.5 0.4 0.2 0.2 0.1 0.1 0.1
5 or 95 1.9 1.2 0.8 0.6 0.4 0.3 0.2 0.1 0.1
10 or 90 2.6 1.6 1.2 0.8 0.5 0.4 0.3 0.2 0.1
15 or 85 3.1 1.9 1.4 1.0 0.6 0.4 0.3 0.2 0.1
20 or 80 3.4 2.2 1.5 1.1 0.7 0.5 0.3 0.2 0.2
25 or 75 3.7 2.4 1.7 1.2 0.7 0.5 0.4 0.2 0.2
35 or 65 4.1 2.6 1.8 1.3 0.8 0.6 0.4 0.3 0.2
50 4.3 2.7 1.9 1.4 0.9 0.6 0.4 0.3 0.2

* Less than 0.1 percent

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Table F. Approximate Standard Error of Estimated Percentage for Population Characteristics of Type II Based on Samples Selected at 1-in-100, 1-in-1,000, and 1-in-10,000

Estimated Percentage: 1/100 10 25 50 100 250 500 1,000 2,500 5,000 10,000
1/1,000 100 250 500 1,000 2,500 5,000 10,000 25,000 50,000 100,000
1/10,000 1,000 2.500 5,000 10,000 25,000 50,000 100,000 --- Not applicable ---
1 or 99 1.1 0.7 0.5 0.3 0.2 0.1 0.1 0.1 * *
2 or 98 1.5 0.9 0.7 0.5 0.3 0.2 0.1 0.1 0.1 *
5 or 95 2.3 1.5 1.0 0.7 0.5 0.3 0.2 0.1 0.1 0.1
10 or 90 3.2 2.0 1.4 1.0 0.6 0.4 0.3 0.2 0.1 0.1
15 or 85 3.8 2.4 1.7 1.2 0.8 0.5 0.4 0.2 0.2 0.1
20 or 80 4.2 2.7 1.9 1.3 0.8 0.6 0.4 0.3 0.2 0.1
25 or 75 4.6 2.9 2.0 1.4 0.9 0.6 0.5 0.3 0.2 0.1
35 or 65 5.0 3.2 2.3 1.6 1.0 0.7 0.5 0.3 0.2 0.2
50 5.3 3.4 2.4 1.7 1.1 0.8 0.5 0.3 0.2 0.2

* Less than 0.1 percent

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Table G. Approximate Standard Error of Estimated Percentage for Population Characteristics of Type III Based on Samples Selected at 1-in-100, 1-in-1,000 and 1-in-10,000

Estimated Percentage 1/100 10 25 50 100 250 500 1,000 2,500 5,000 10,000
1/1,000 100 250 500 1,000 2,500 5,000 10,000 25,000 50,000 100,000
1/10,000 1,000 2,500 5,000 10,000 25,000 50,000 100,000 --- Not applicable ---
1 or 99 1.7 1.1 0.8 0.5 0.3 0.2 0.2 0.1 0.1 0.1
2 or 98 2.4 1.5 1.1 0.8 0.5 0.3 0.2 0.2 0.1 0.1
5 or 95 3.7 2.3 1.7 1.2 0.7 0.5 0.4 0.2 0.2 0.1
10 or 90 5.1 3.2 2.3 1.6 1.0 0.7 0.5 0.3 0.2 0.2
15 or 85 6.1 3.8 2.7 1.9 1.2 0.9 0.6 0.4 0.3 0.2
20 or 80 6.8 4.3 3.0 2.2 1.4 1.0 0.7 0.4 0.3 0.2
25 or 75 7.4 4.7 3.3 2.3 1.5 1.1 0.7 0.5 0.3 0.2
35 or 65 8.1 5.1 3.6 2.6 1.6 1.1 0.8 0.5 0.4 0.3
50 8.5 5.4 3.8 2.7 1.7 1.2 0.8 0.5 0.4 0.3

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Table H. Estimated Totals Based on One-in-One-Thousand Sample with Standard Errors Approximated by Computation Using Random Groups and by Use of Tables B, C or D1

Item Estimate
(000)		 Approximate Standard Errors
Computed by Random Groups
(000)		 From Tables B, C or D
Interpolated value (000) Characteristic Type (000)
(1) (2) (3) (4)
Whites:
Males:
Rural Farm 6,164 118 128 III
Rural Non-farm 18,587 199 211 III
Non-Heads
Age under 5 years 8,868 88 99 II
5-13 years 14,559 113 126 II
14-24 years 9,761 103 106 II
25-44 years 2,784 57 55 II
45 years and over 2,548 51 54 II
Females:
Rural Farm 5,749 103 128 III
Rural Non-farm 18,122 l87 203 III
Non-Heads
Age Under 5 years 8,541 84 96 II
5-13 years 14,112 97 127 II
14-24 years 11,599 106 115 II
25-44 years 19,783 95 92 I
45 years and over 19,100 111 92 I
Non-White:
Males:
Rural Farm 830 54 45 III
Rural Non-farm 1,911 62 72 III
Non-Heads
Age Under 5 years 1,408 34 39 II
5-13 years 2,149 43 48 II
14-24 years 1,402 43 39 II
25-44 years 680 28 28 II
45 years and over 437 22 22 II
Females
Rural Farm 815 59 47 III
Rural Non-farm l,853 58 62 III
Non-Heads
Age Under 5 years 1,377 26 38 II
5-13 years 2,141 36 48 II
14-24 years 1,659 28 42 II
25-44 years 2,112 33 38 I
45 years and over 1,656 29 34 I
Highest Grade of School Completed:
Age 25 and Over
None, Elementary1-4 8,102 99 92 II
Elementary 5 or 6 7,351 91 91 II
Elementary 7 6,313 85 83 II
College, 1-3 years 8,808 97 99 II
College 4 yrs. or over 7,614 94 92 II
In Civilian Labor Force:
At work 62,777 181 2 II
With a job, not at work 1,665 41 43 II
Unemployed 3,609 66 62 II
All Housing Units:
Without Telephones 11,258 85 78 I
Built before 1950 3~,354 89 2
Heating Equipment
Electric built-in units 656 23 21 I
Not heated 505 17 19 I
Dilapidated 2,353 40 40 I
Number of Bedrooms
1 8,840 179 1564 I
3 17,155 264 2,4 I
4 or more 6,060 142 1344 I
Owner-Occupied Units
Whites 30,769 3 2,3 I
Non-whites 1,974 1 363 I
With 7 or more rooms 7,382 75 66 I
With 1 person per room 29,970 37 2 I
Value
Less than $5,000 3,085 56 46 I
$5,000-$9,900 6,493 64 62 I
$35,000 or more 756 21 23 I
Renter-Occupied Units
Whites 17,084 3 2 I
Non-whites 3,060 - 453 I
With 7 or more rooms 1,219 32 30 I
With 1 person/room 16,852 31 2 I
Gross Rent
Under $30 1,032 28 28 I
$30-$59 5,194 58 58 I
$150 or more 574 25 21 I
Contract Rent
Under $30 2,301 46 41 I
$30-$59 7,028 69 66 I
$150 or more 370 19 16 I

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ENDNOTES:

  1. The figures in this table were calculated using data from an earlier one-in-one thousand sample selected using the same sample design employed here. While the figures may not be in exact agreement with figures from the present sample, they accurately reflect the comparisons which the table was designed to illustrate. Standard error not quoted in tables because non-sampling errors contribute substantially to total survey error for estimates of this magnitude.

  2. Computed standard error less than given in Tables B, C, or D since item describes a stratum within which sample selection was controlled.

    Based on a one-in-five-thousand sample.

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