Question 1029373
Data using EXCEL
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*[illustration X6.JPG].
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a) Mean : 17.85, 20.23
Median : 18.10, 20.31
b) Range : 1.38,1.05
IQR : 0.81, 0.13
c) Sigma: 0.59, 0.40
d) B, sigma is less than A.