Algebra-1

Question Analysis
This question involves the same table, focusing on the combination of "Grade 10" and "Music".
The main focus is on extracting the joint frequency for this specific pair of categories.

Key Concept Explanation
Joint Frequency: As defined earlier, it is the count at the intersection of two categories. Here, it represents the number of Grade 10 students who chose Music.

Step-by-Step Solution
Locate the row labeled "Grade 10" and the column labeled "Music".
The value at their intersection is the joint frequency, which is 50.