Statistics And Probability Question 413
Question: The standard deviation of 25 numbers is 40. If each of the numbers is increased by 5, then the new standard deviation will be
[DCE 1995]
Options:
A) 40
B) 45
C) $ 40+\frac{21}{25} $
D) None of these
Show Answer
Answer:
Correct Answer: A
Solution:
If each item of a data is increased or decreased by the same constant, the standard deviation of the data remains unchanged.
BETA
