Question

Find the Interquartile Range for Marcus's data. A.4.5 B.2 C.6 D.2.5

Answer 1

Answer:  B. 2

How I got that answer:

The data set for Marcus is

2, 3, 5, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 10, 10

The five number summary is

• min = 2
• Q1 = 6
• median = 7
• Q3 = 8
• max = 10

So the interquartile range (IQR) is

IQR = Q3 - Q1

IQR = 8 - 6

IQR = 2

Answer 2

Answer is b.2
Just did it