in a survey patients are asked how long they sat and their doctors waiting area the results for two doctors are shown below

In the question, we are given the result from the two doctors
Doctor 1 : 5, 10, 10, 15, 20, 20, 20, 100
Doctor 2: 10, 10, 10, 20, 20, 20, 25, 25
Firstly, we need to calculate the median
The median = n / 2
The two numbers at the middle are 15 and 20
To calculate the median, we need to calculate the average of the two numbers
Median = 15 + 20 / 2
= 35 / 2
= 17.5
For the first doctor the median of the waiting time is 17.5
Second doctor
We need to calculate the median as well
The middle numbers are 20 and 20
Median = 20 + 20 / 2
Median = 40 / 2
Median = 20
For the second doctor, the median is 20
Therefore, the second doctor is 2.5 longer than the first doctor.