A set of n values X1, X2, ..., Xn has a standard deviation of 5. The standard deviation of n values X1 - 7, X2 - 7, ......... Xn - 7 will be:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. 5.
Subtracting the same constant from all values does not change the standard deviation.
New standard deviation = 5