question_answer

A set of n values \[{{x}_{1}},{{x}_{2}}..........{{x}_{n}}\] has \[S.D.=\sigma \]. Then the S.D. of the values \[{{x}_{1}}+k,{{x}_{2}}+k,......,{{x}_{n}}+k\] will be

A)  \[\sigma \]        

B)  \[\sigma +k\]

C)  \[\sigma -k\]                  

D)  \[k\sigma \].