+0  
 
-1
113
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Help 35

NotSoSmart  May 17, 2018
 #1
avatar+3276 
+1

1. First,  find the mean: 87.2

 

2. We find the distance from each data point to the mean, 

First point: 83- square distance from mean- 17.64

85-87.2-4.84

82 - 87.2 -27.04

 

93-87.2 squared-33.64

 

83-87.2- 17.64

 

84-87.2-10.24

 

95-87.2-60.84

 

87-87.2-0.04

 

86-87.2-1.44

 

94-87.2- 46.24

 

Now, add everything up: 201.96

10 data points, so 201.96/10=20.196

 

Take the square root of that to get:\(\sqrt{20.196}=4.49..\)

So, 4.6?

 

smileysmiley

tertre  May 17, 2018

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