I am having some issues finding the mean, mode, variance and standard deviation of the following data sets.

n=25

x: f:

1 4

2 1

3 4

4 3

5 2

6 1

7 0

8 2

9 4

10 4

n=200

x: f:

1 23

2 17

3 23

4 19

5 20

6 22

7 16

8 21

9 21

10 18