1. exercises Statistics

1. Calculate arithmetic mean, median and mode from following numbers:

4.9 2.2 4 6 6.8 5 6 6.

2. Calculate arithmetic mean, median and mode from following numbers:

9, 7, 7, 5, 7, 7, 8, 8, 9, 8, 9, 9, 8, 10 and 7.

3. Calculate standard deviation from following 10 peoples heights.

This a closed sample so use in formula n-1 instead of n.

165 165 152 158 170 160 162 158 168 164

4. Calculate standard deviation from following 16 weights of sugar bags (in grams):

This a closed sample so use in formula n-1 instead of n.

983, 976, 990, 997, 983, 969, 986, 995, 978, 996, 998, 986, 999, 988, 992 and 979.