Population by Sex and Selected Age Groups: 2000 and 2010 (For information on confidentiality protection, nonsampling error, and definitions, see www.census.gov/prod/cen2010/doc/sf1.pdf 2000 Number 281,421,906 2010 Change, 2000 to 2010 Sex and selected age groups Percent Number Percent Number Percent Total populatlon 100.0 308,745,538 100.0 27,323,632 SEX Male Female SELECTED AGE GROUPS Under 18 years 138,053,563 143,368,343 151,781,326 156,964,212 49.2 50.8 13,727,763 13,595,869 50.9 72,293,812 19,175,798 53,118,014 112,183,705 27,143,454 85,040,251 61,952,636 34,991,753 217,149,127 209,128,094 196,899,193 41,256,029 74,181,467 20,201,362 53,980,105 112,806,642 30,672,088 82,134,554 81,489,445 40,267,984 25.7 24.0 1,887,655 1,025,564 862,091 622,937 3,528,634 -2,905,697 19,536,809 5,276,231 26,126,378 25,435,977 24,059,660 8,716,152 Under 5 years 5 to 17 years 18.9 39.9 17.5 18 to 44 years 18 to 24 years 25 to 44 years 13.0 -3.4 30.2 22.0 26.6 26.4 13.0 45 to 64 years 65 years and over 78.8 76.0 12.0 12.2 12.2 16 years an d over 8 years and over 1 years and over 62 years and over 243,275,505 234,564,071 220,958,853 49,972,181 74.3 70.0 16.2 Sources: U.S. Census Bureau, Census 2000 Summary File 1and 2010 Census Summary File 1

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Author:Amos Gilat
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Age dependency Ratio:
Old-Age dependency ratio:
Child dependency Ratio:

3. Explain the significance of each ratio by writing them in complete sentences. Why would someone bother to compare the populations of the relevant age categories?

Population by Sex and Selected Age Groups: 2000 and 2010
(For information on confidentiality protection, nonsampling error, and definitions, see www.census.gov/prod/cen2010/doc/sf1.pdf
2000
Number
281,421,906
2010
Change, 2000 to 2010
Sex and selected age groups
Percent
Number
Percent
Number
Percent
Total populatlon
100.0
308,745,538
100.0
27,323,632
SEX
Male
Female
SELECTED AGE GROUPS
Under 18 years
138,053,563
143,368,343
151,781,326
156,964,212
49.2
50.8
13,727,763
13,595,869
50.9
72,293,812
19,175,798
53,118,014
112,183,705
27,143,454
85,040,251
61,952,636
34,991,753
217,149,127
209,128,094
196,899,193
41,256,029
74,181,467
20,201,362
53,980,105
112,806,642
30,672,088
82,134,554
81,489,445
40,267,984
25.7
24.0
1,887,655
1,025,564
862,091
622,937
3,528,634
-2,905,697
19,536,809
5,276,231
26,126,378
25,435,977
24,059,660
8,716,152
Under 5 years
5 to 17 years
18.9
39.9
17.5
18 to 44 years
18 to 24 years
25 to 44 years
13.0
-3.4
30.2
22.0
26.6
26.4
13.0
45 to 64 years
65 years and over
78.8
76.0
12.0
12.2
12.2
16 years an
d over
8 years and over
1 years and over
62 years and over
243,275,505
234,564,071
220,958,853
49,972,181
74.3
70.0
16.2
Sources: U.S. Census Bureau, Census 2000 Summary File 1and 2010 Census Summary File 1
Transcribed Image Text:Population by Sex and Selected Age Groups: 2000 and 2010 (For information on confidentiality protection, nonsampling error, and definitions, see www.census.gov/prod/cen2010/doc/sf1.pdf 2000 Number 281,421,906 2010 Change, 2000 to 2010 Sex and selected age groups Percent Number Percent Number Percent Total populatlon 100.0 308,745,538 100.0 27,323,632 SEX Male Female SELECTED AGE GROUPS Under 18 years 138,053,563 143,368,343 151,781,326 156,964,212 49.2 50.8 13,727,763 13,595,869 50.9 72,293,812 19,175,798 53,118,014 112,183,705 27,143,454 85,040,251 61,952,636 34,991,753 217,149,127 209,128,094 196,899,193 41,256,029 74,181,467 20,201,362 53,980,105 112,806,642 30,672,088 82,134,554 81,489,445 40,267,984 25.7 24.0 1,887,655 1,025,564 862,091 622,937 3,528,634 -2,905,697 19,536,809 5,276,231 26,126,378 25,435,977 24,059,660 8,716,152 Under 5 years 5 to 17 years 18.9 39.9 17.5 18 to 44 years 18 to 24 years 25 to 44 years 13.0 -3.4 30.2 22.0 26.6 26.4 13.0 45 to 64 years 65 years and over 78.8 76.0 12.0 12.2 12.2 16 years an d over 8 years and over 1 years and over 62 years and over 243,275,505 234,564,071 220,958,853 49,972,181 74.3 70.0 16.2 Sources: U.S. Census Bureau, Census 2000 Summary File 1and 2010 Census Summary File 1
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