Module 4

Question 1

single value that is used to describe the spread of the distribution.

Answer 1

Measure of Variation

Question 2

Describes the difference between the third quartile (Q3) and the first quartile (Q1) telling us about the range of the middle half of the scores in the distribution.

Answer 2

Interquartile Range

Question 3

value that marks one of the divisions
that breaks a series of values into 4
equal parts

Answer 3

Quartile

Question 4

○ Most important measure of variation
○ Square root of the variance reveals the average deviation of the observation from the mean
○ Has the same unit as the original data

Answer 4

Standard Deviation

Question 5

Measures how far a data set is spread out

Answer 5

Variance