12 observations in a data are written in descending order. If the first observation is doubled, the median will :

1. remain same

2. increase by 12

3. decrease by 12

4. change by 12

Median of numbers 10, 12, 9, 8, 10, 12, 10, 6 and 4 is :

1. 12

2. 10

3. 6

4. 9

If each observation in a data is decreased by two, their :

1. mean decreases by 2, but median remains same.

2. mean remains same, but median decreases, by 2.

3. mean and median both decrease by 2.

4. mean and median both remain the same.

Find the median of :

25, 16, 26, 16, 32, 31, 19, 28 and 35