28. Which measure of variability is the least reliable because it can be easily affected by outliers?
A. Range B. Mean Deviation C. Variance D. Standard Deviation

29. Range, standard deviation, and variance are 'similar' in that each looks at

A. the difference between high and low scores.
C. the collection to be sampled.
B. how spread out the data is.
D. the numerical value that occurs mos often.

30. It is the difference between the highest and lowest values.

A. Variance
B. Standard Deviation
C. Range
D. Mean Deviation​