Match the following.
| List–I | List–II |
|---|---|
| A) Attenuated whole agent vaccine | I. Polio |
| B) Inactivated whole agent vaccines | III. Measles |
| C) Toxoids | IV. Diphtheria |
| D) \(p^{53}\) protein | II. Guardian angel of genome |
Find the variance of the following frequency distribution:
| Class Interval | ||||
| 0--4 | 4--8 | 8--12 | 12--16 | |
| Frequency | 1 | 2 | 2 | 1 |