Algebra-1

Question Analysis
This question tests the understanding of marginal relative frequency, which is the ratio of a single variable category to the total number of the population.

Key Concept Explanation
Marginal relative frequency is calculated by dividing the marginal frequency (the number of students in a specific category) by the total number of the population. It can be expressed as a fraction, decimal, or percentage.

Step-by-step Solution
1. Identify the number of 9th-grade students: 75
2. Identify the total number of students: 150
3. Calculate the marginal relative frequency:

Click "Show Answer" to reveal the answer and analysis