Algebra-1

Question Analysis
The question tests the understanding of joint frequencies in a two-way frequency table.

Key Concept Explanation
Joint frequencies are the specific data values in the cells of a two-way frequency table, representing the number of observations that fall into the combination of two categories from different variables.

Step-by-step Solution
1. Identify the given value: 12 (number of 10th graders who play basketball).
2. Recognize that this value is locat...