Finding Mean, Median and Mode

Please explain how to answer this question. I have a frequency distributiontable that appears like this:

x f
6 1
5 2
4 2
3 2
2 2
1 5

mean (to 2 decimal points) is _____
median is _____
mode is _____

also i tried to figure the mean, medianand modefor sample of scores.
5,4,5,2,7,1,3,5
i came up with mean is 4.57 or 5
median is 4.50
mode is 5.
is this correct?

x f xf
6 1 6
5 2 10
4 2 8
3 2 6
2 2 4
1 5 5
Total (f) = 1+2+2+2+2+5 = 14
Total (xf) = 6+10+8+6+4+5 = …

This solution explains how to find mean, median and mode of a frequency distribution.