1.

The output of 20 workers in hand made pot painting store is as 55, 65, 62, 60, 74, 75, 65, 70, 70, 72, 67, 78, 79, 80, 68, 54, 56, 63, 69, 71 then the coefficient of range is

A. 0.29
B. 0.19
C. 0.49
D. 0.39
Answer» C. 0.49


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