Find the average, highest, and lowest age for students.

Write queries for the following. (Use tables created in Chapter 4 Lab Activity.)

```
SQL> SELECT AVG((SYSDATE - BirthDate)/365),
2 MAX((SYSDATE - BirthDate)/365),MIN((SYSDATE - BirthDate)/365
3 FROM student;

AVG((SYSDATE-BIRTHDATE)/365) MAX((SYSDATE-BIRTHDATE)/365)
---------------------------- ----------------------------
MIN((SYSDATE-BIRTHDATE)/365)
----------------------------
22.077602 33.7008897
18.5447253
```