Algebra-1

Question Analysis
This question tests the student's ability to identify the mode of a given data set. The mode is the value that appears most frequently in the data set.

Key Concept Explanation
The mode is a measure of central tendency that represents the most common value in a data set. A data set can have one mode, multiple modes, or no mode at all.

Step-by-step Solution
1. Count the frequency of each data point: 5 appears 2 times, 7 appears 1 time, 9 appears 3 times, an...