Q.2
The standard deviation of numbers of a data set is 9. If 3 is subtracted to each number of data set then what is the new standard deviation?
A. 1
B. 5
C. 2
D. 9
E. 3
The standard deviation of numbers of a data set is 9. If 3 is subtracted to each number of data set then what is the new standard deviation?
A. 1
B. 5
C. 2
D. 9
E. 3