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Quartiles & IQR

Total questions: 6

Worksheet time: 9mins

Name
Class
Date
1.
In order to find the median, the data must be sorted from least to greatest first.
a)
True
b)
False
2.
The number of miles that Jenna cycled each week for a 7-week period is shown: 
36, 42, 28, 52, 48, 36, 31 
What is the median number of miles Jenna cycled?
a)
24
b)
36
c)
39
d)
52
3.
Find the median for the following prices;
$12.50,    $15.50,   $15,   17.50,   $11.50
a)
$12.50
b)
$17.50
c)
$15
d)
$11.50
4.
Given the data: 136, 150, 119, 150, 125, 140.
Find the upper quartile (Q3). (Hint... put the numbers in order and find the median to help you find Q3)
a)
 125
b)
150
c)
139.5
d)
143
5.
Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15
a)
13
b)

7

c)
9
d)
6
6.

Find the IQR (Q3 - Q1)  of the data

20, 22, 25, 29, 31

a)
30
b)
21
c)
25
d)
9