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?

7 and 9

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

$\text{New mean} = 11 - 2 = 9$