Deck 13: Range and Interquartile Range

Question 1

What is NOT true about variability?

A) It is differences among the scores of participants
B) If all the participants who take a test earn the same score, there is no variability
C) It is usually found among participants in research studies
D) A synonym for variability is deviation

Answer 1

D

Question 2

Find the range from the following data:
5 , 6 , 7 , 8 , 9 , 10 , 10 , 11 , 12 , 45

Answer 2

Range= 45 - 5 = 40

Question 3

Find the interquartile range in the above data.

Answer 3

Interquartile range = 11.5 - 6.5 = 5.0

Question 4

What is the score of 45 in the above data referred to as?

A) Variability
B) IQR
C) Outlier
D) A high range

Question 5

When median is reported as the average for a set of scores, which measure of variability is customary to report also?

A) Range
B) Interquartile Range
C) Standard Deviation

Question 6

As a general rule, range is appropriate for describing a distribution of scores with outliers. ________