The correct option is A increase
The given data set is
60, 66, 74, 48, 52
Arranging the number in ascending order, we get:
48, 52, 60, 66, 74
For a set with an odd number of values, the median is the middle value of the data set when it is arranged in an ascending or descending order.
∴ Median = 60
When each value in the data set is increased by 5. we get
60+5, 66+5, 74+5, 48+5, 52+5
65, 71, 79, 53, 57
Arranging the numbers in ascending order, we get
53, 57, 65, 71, 79
The new median is 65.
Hence, the median increases.