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
- In a data set, if the median is 15 and the mean is 15, what is the most likely value for the mode if the distribution is perfectly symmetrical?
- Find P(A union B) given the following data.
- Find the missing frequency 'p' if the mean of the data (x: 5, 10, 15; f: 2, p, 3) is 10.5.
- What is the arithmetic mean of the first five prime numbers?
- The mean of 10 observations is 15. If one observation 24 is replaced by 34, what is the new mean?