Algebra-1

Question Analysis
This question tests the student's ability to find the third quartile (Q3) of a given data set. The data set is already sorted, and the student needs to identify the median of the second half of the data.

Key Concept Explanation
Q3 is the median of the second half of the data set. If the number of data points in the second half is odd, Q3 is the middle number. If even, it is the average of the two middle numbers.

Step-by-step Solution
1. The data set is already sorted: 5, 8, 10, 12, 15, 18, 20, 22, 25.
2. The se...