Question

The following table gives the ages 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 |

(ii) The conditional frequency distribution of the age of husbands when the age of wives ** between 25 - 35.
(i) The marginal frequency distribution of the age of husbands.Find :**

Answer 1

| Age of wives (in years) | Age of husbands (in years) |
| 20 – 30 | 30 – 40 | 40 – 50 | 50 – 60 |
| 15 – 2525 – 3535 – 4545 – 5555 – 65 | 5---- | 9101-- | 325124- | -22164 |
| Total | 5 | 20 | 44 | 24 |

Now, marginal distribution of age of husbands.

| Age (years | 20 – 30 | 30 – 40 | 40 – 50 | 50 – 60 | Total |
| Number | 5 | 20 | 44 | 24 | 93 |

Now marginal distribution of husband, when the age of wives **** between 25 – 35

| Age (years | 20 – 30 | 30 – 40 | 40 – 50 | 50 – 60 | Total |
| Number | - | 10 | 25 | 2 | 37 |