An industrial psychologist observed eight drillpress operators for 3 working days. She recorded the number of times each operator pressed the "faster" button instead of the "stop" button to determine whether the design of the control panel was contributing to the high rate of accidents in the plant.

Given the scores 4, 7, 0, 2, 7, 3, 6, 7, compute the following:

a. Mean

b. Median

c. Mode

d. Range

e. Standard deviation

f. Variance I/O.