Question

What is the interquartile range of the given patient ages?

A. 0
B. 2
C. 4
D. 6

Answer 1

To find the interquartile range, arrange the data in ascending order and find the difference between Q3 and Q1.

Step-by-step explanation:

The interquartile range is a measure of the spread of data and is calculated by finding the difference between the third quartile (Q3) and the first quartile (Q1). To find the interquartile range for the given test scores:

1. Arrange the test scores in ascending order.
2. Find Q1, which is the median of the lower half of the data set.
3. Find Q3, which is the median of the upper half of the data set.
4. Calculate the interquartile range as IQR = Q3 - Q1.

For Class A, the interquartile range is 11 (Q3 = 90, Q1 = 79) and for Class B, the interquartile range is 22.5 (Q3 = 92, Q1 = 69.5).