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?