A) 10
B) 20
C) 30
D) 40
Correct Answer: A
Solution :
We know the formula \[{{\sigma }^{2}}=\frac{\sum {{(x-x)}^{2}}}{n}\] \[\Rightarrow \] \[{{\sigma }^{2}}=\frac{250}{10}\] \[\Rightarrow \] \[\sigma =5\] \[\therefore \] Coefficient of variation \[CV=\frac{\sigma }{x}\times 100\] \[\Rightarrow \] \[CV=\frac{5}{50}\times 100\] \[\Rightarrow \] \[CV=10\]You need to login to perform this action.
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