A survey of 150 students found that 60 students in the 9th g...

Question Analysis
This question tests the student's ability to calculate the marginal relative frequency after a change in the total population. The key is to understand how the addition of new students affects the marginal relative frequency.

Key Concept Explanation
Marginal Relative Frequency: It is the ratio of the marginal frequency (the number of students in a single variable category) to the total number of the population. In this case, it is the proportion of 9th-grade students among the total number of students.

Step-by-step Solution
1. Identify the initial marginal frequency of 9th-grade students: 60.
2. Determine the new total number of students: 150 + 30 = 180.
3. Calculate the new marginal frequency of 9th-grade students: 60 + 30 = 90.
4. Calculate the new marginal relative frequency:

Click "Show Answer" to reveal the answer and analysis

Algebra-1

Question

Answer & Analysis

Analysis

Want More Practice Questions?