Name: 
 

Dispersion 3



 1 

What is the sample standard deviation of the data in the table below, rounded to the nearest tenth?

mc001-1.jpg
a)
12.5
c)
17.1
b)
12.8
d)
18.7
 

 2 

The accompanying table shows the scores on a classroom test.

mc002-1.jpg

What is the population standard deviation for this set of scores?
a)
10.2
c)
25
b)
10.4
d)
88
 

 3 

The table below displays the number of siblings of each of the 20 students in a class.

mc003-1.jpg

What is the population standard deviation, to the nearest hundredth, for this group?
a)
1.11
c)
1.14
b)
1.12
d)
1.15
 



 
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