# Controller

Output Controller of the company in the control of 50 randomly selected products found that 37 of them had no defect 8 has only one flaw, three had two defects, and two products had three defects. Determine the standard deviation and coefficient of variation.

Correct result:

s =  0.7746
c =  1.9365

#### Solution:

$c=s\mathrm{/}\mathrm{\mid }m\mathrm{\mid }=1.9365$

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