Statisticshard · Past Paper
If the mean of observations x1, x2, ..., xn is M, what is the mean of (x1/k), (x2/k), ..., (xn/k)?
AM
BM/k
CMk
DM+k
✓ Correct Answer: B — M/k
If every element in a set is divided by a constant k, the mean of the set is also divided by that same constant k.
Share this question
More from Statistics
- The mean of 10 items was found to be 15. If each item is increased by 2, what is the new mean?
- A bag has 3 red and 5 black balls. If two balls are drawn one after another with replacement, what is the probability that both are red?
- A coin is tossed. What is the probability of NOT getting a head?
- Two coins are tossed simultaneously. What is the probability of getting exactly two heads?
- If data is 1, 1, 1, 1, 1, what is the mean?