The number of hours worked in a week for asampleof 11 part-time workers is as follows:

12, 10, 21, 12, 29, 18, 15, 20, 19, 10 and 12

Determine the following:

a) Mean (2 decimals)

b) Median (no decimals)

c) Mode (no decimals)

d) Range (no decimals)

e) Standard Deviaion (3 decimals)

f) Variance (3 decimals)

g) Coefficient of Skewnessand interpret