1. (75%)A random sample of age from college students in UPW were collected. Answered questions based on the given data:

30 26 23 28 38 33 25 28 25 19

1. Find sample size.
2. Find sample median.
3. Find sample mean.
4. Find IQR.
5. Construct a box plot.
6. Mention a reason that box plot is useful
7. What aspect of the data are both the sample standard deviation and IQR measuring? List an advantage and disadvantage of each.
8. After 10 years of data collection, how the median and IQR will change?