Algebra-1

Question Analysis
This question involves the same two-way frequency table, focusing on the variable "elective choice" (specifically "Music").
The main focus is on calculating the marginal frequency for the "Music" column.

Key Concept Explanation
Marginal Frequency: The total count of observations in a single row or column of a two-way table. For a column, it is the sum of all joint frequencies within that column, representing the total for that category regardless of the other variable.

Step-by-Step Solution
Locate the column labeled "Music".
The marginal frequency for this column is the "Column Total" value at the bottom of the column, which is 95.
(Verification: The joint frequencies ...