Algebra-1

Question Analysis
This question involves a two-way frequency table with variables "grade" (6th/7th) and "transportation" (walk/bike), with a total of 100 students.
The main focus is on calculating the marginal relative frequency of students who ride a bike, relative to all students.

Key Concept Explanation
Marginal Relative Frequency: The proportion of the total number of observations that fall into a single category of one variable (ignoring the other variable). It is calculated as:
Marginal Relative Frequency = (Marginal frequency of the category) ÷ (Total number of observations in the dataset).

Step-by-Step Solution
Identify the marginal frequency of students who ride a bike: 30 (column total for "Bike").
Identify the total ...