Question

How to calculate median from unequal class intervals?

a) Use the midpoint of each class interval

b) Add the lower and upper limits of each class interval and divide by 2

c) Take the average of the first and last data points

d) Count the number of data points in each interval and sum them

Answer 1

To calculate the median from unequal class intervals, use the midpoint of each interval. Arrange the midpoints in ascending order and find the middle value as the median.

Step-by-step explanation:

To calculate the median from unequal class intervals, you can use the midpoint of each interval. Here is a step-by-step explanation:

1. Find the midpoint of each class interval by adding the lower and upper limits and dividing by 2.
2. Arrange the midpoints in ascending order.
3. If there is an odd number of midpoints, the median is the middle value.
4. If there is an even number of midpoints, the median is the average of the two middle values.

For example, if the midpoints are 5, 7, 9, 12, and 15, the median would be 9. If the midpoints are 4, 6, 8, 10, 12, and 14, the median would be (8 + 10) / 2 = 9.