Yours:
Mean:
13.5+12.2+13.2+11.6+10.5=61.
61/5 is 12.2
The mean is 12.2
Median:
13.2
Mode:
There is no mode.
Range:
10.5 to 13.5
The range is 3.
Friend:
Mean:
12.6+13+12.8+11.6+12.5=62.5
62.5/5 is 12.5
The mean is 12.5
Median:
12.8
Mode:
There is no mode
Range:
11.6 to 13
The range is 1.4