Using Short-cut Method,calculate the standard deviation from the data given below:

Explanation

Calculation of Standard Deviation-Short-cut Method

`sigma=sqrt((sumfdx^(2))/(N)-((sumfdx)/(N))^(2))=sqrt((139)/(46)-((-31)/(46))^(2))`
`=sqrt(3.0217-0.4542)`
`=sqrt(2.5675)=1.6`
Standard Deviation =1.6.