The median and mean of 7 observations are 9 and 11 respectively. If 2 is subtracted from each observation, then the new median and the new mean will respectively be which of the following?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 7 and 9
Given:
- Median = 9
- Mean = 11
- Number of observations = 7
If 2 is subtracted from each observation:
- Median also decreases by 2
$\text{New median} = 9 - 2 = 7$
- Mean also decreases by 2
$\text{New mean} = 11 - 2 = 9$