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प्रश्न
If the Crude Death Rate (CDR) for the following data is 13.4 per thousand, find x:
| Age groups (in years) |
Population | Number of deaths |
| 0 - 20 | 40,000 | 350 |
| 20 - 65 | 65,000 | 650 |
| 65 and above | 15,000 | x |
उत्तर
| Age groups (in years) |
Population | Number of deaths |
| 0 - 20 | 40,000 | 350 |
| 20 - 65 | 65,000 | 650 |
| 65 and above | 15,000 | x |
| Total | ΣP = 1,20,000 | ΣD = x + 1000 |
CDR = 13.4
`therefore (Σ"D")/(Σ"P") xx 1000` = 13.4
`(x + 1000)/120000 xx 1000` = 13.4
x + 1000 = 13.4 x 120
x + 1000 = 1608
`therefore` x = 608
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