Question
Forty patients with diarrhoeal diseases were studied. Their age distribution is given in the table below:
| Age (in years) | Number of patients |
|---|---|
| 0–4 | 22 |
| 5–9 | 12 |
| 10–14 | 6 |
What is the mean age of the patients in this study?
| A. |
2 years |
| B. |
4 years |
| C. |
5 years |
| D. |
6 years |
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