WorksheetsIQR and Box Plots
Total questions: 12
Worksheet time: 24mins
Name
Class
Date
1.
True or False
The interquartile range is the difference between the upper quartile (Q3) and the lower quartile (Q1).
The interquartile range is the difference between the upper quartile (Q3) and the lower quartile (Q1).
a)
True
b)
False
2.
Find the interquartile range using the following.
Minimum: 1
Q1: 3
Median: 5
Q3: 7
Maximum: 9
Minimum: 1
Q1: 3
Median: 5
Q3: 7
Maximum: 9
a)
8
b)
4
c)
5
d)
10
3.
What data value is the upper quartile (Q3)?
a)
64
b)
62
c)
66
d)
58
4.
What is the median?
a)
62
b)
58
c)
66
d)
60
5.
What value is the lower quartile (Q1)?
a)
66
b)
58
c)
60
d)
64
6.
What is the interquartile range (IQR)?
a)
4
b)
64
c)
60
d)
8
7.
Which restaurant has a higher median wait time?
a)
Lucy's Steakhouse
b)
Gary's Grill
c)
They are the same
8.
Use the box plot to answer the question.
a)
14
b)
18
c)
15
d)
12
9.
What is the lower quartile (Q1) of the data set?
a)
25
b)
30
c)
26
d)
28
10.
Use the box plot to answer the question.
a)
25%
b)
50%
c)
75%
d)
100%
11.
11. What percentage of the data is between 90 and 140?
a)
25 %
b)
50%
c)
75%
d)
100%
12.
Find the interquartile range using the following data.
18, 15, 22, 16, 17, 15, 12, 22, 13
18, 15, 22, 16, 17, 15, 12, 22, 13
a)
34
b)
16
c)
6
d)
10
100 %
