For the graph,a) list the data items, thenb) calculate the mean,c) calculate the standard deviation, andd) calculate the range.If needed, round the standard deviation to 1 decimal place.
A. a) 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 6, 6, 8, 8, 8, 8
b) 
= 4
c) s = 1.8
d) range = 6
B. a) 6, 6, 8, 8, 8, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4, 4, 4, 4
b) 
= 4
c) s = 1.8
d) range = 6
C. a) 6, 6, 8, 8, 8, 2, 2, 2, 2, 2, 2, 4, 4, 4, 4, 4, 4, 4, 4
b) 
= 4
c) s = 2.1
d) range = 6
D. a) 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 6, 6, 8, 8, 8, 8
b) 
= 4
c) s = 2.3
d) range = 6
Answer: D
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