Following Table Gives the Age of Husbands and Wives - Mathematics and Statistics

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Sum

Following table gives the age of husbands and wives

Age of wives (in years)

Age of husbands (in years)

20-30

30-40

40-50

50-60

15-25

5

9

 3

25-35

10

25

2

35-45

1

12

2

45-55

4

16

55-65

4

Find:

(a)The marginal frequency distribution of the age of husbands.

(b)The conditional distribution of the age of husbands when the age of wives lies between 25 - 35

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Solution

Age of wives (in years)

Age of husbands (in years)

 

20-30

30-40

40-50

50-60

Total

15-25

5

9

 3

17

25-35

10

25

2

37

35-45

1

12

2

15

45-55

4

16

20

55-65

4

4

Total

5

20

44

24

93

(a) The marginal frequency distribution of the age of husbands.

Age of husbands  20-30 30-40 40-50 50-60 Total 
Frequency 5 20 44 24 93

(b) The conditional distribution of the age of  husbands when the age of wives lies between 25 - 35.

Age of husbands 20-30 30-40 40-50 50-60 Total
Frequency ___ 10 25 2 37
Concept: Uses of Vital Statistics in Demography
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2014-2015 (March)

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