Which of the following sets has/have the same standard deviation as the set {r, s, t}?
I. {r nxscrapbook.com 1, s 1, t 1}
II. { | r |, | s |, | t | }
Which of the following sets has/have the same standard deviation as the set {r, s, t}?
I. {r nxscrapbook.com 1, s 1, t 1}
II. { | r |, | s |, | t | }
(А)
The answer is A.
I – If the same constant a is added to each number of the set the deviation of the new set will remain the same.
Guys, thanks for your thoughts! But the correct answer is E. Any ideas, why?