1.

Find the variance and standard deviation from the following data:

Answer»

Solution :
Arithmetic mean `BAR=(sumf_(i)x_(i))/(sumf_(i))=120/24=5`
Variance `sigma^(2)=(sumf_(i)(x_(i)-barx)^(2))/(sumf_(i))=152/24=6.33`
Standard DEVIATION `sigma=sqrt(6.33)=2.52`


Discussion

No Comment Found