For the given sample: X =

21

15

17

11

16

12

14

15

17

14

14

13

16

14

11

1. Find the mean of the sample
2. Find the median of the sample
3. Find the sample variance
4. Find the sample standard deviation
5. Find the 5-number summary
6. Create histogram from the sample
7. Create boxplot from the sample
8. Create normal quantile plot from the sample, based on the plot is the data from a normal distribution?