Question

dr. jamaal wants to study whether there is a relationship between the number of hours a high school senior spends on social networking sites and their grade point average. he obviously cannot study every 12th grader, so instead he will select a smaller ______ of seniors to study.
○ population
○ cross - section
○ school
○ sample

Explanation:

In research, when the entire group of interest (all 12th graders, the population) is too large to study, a smaller, representative subset selected for analysis is called a sample. The other options are incorrect: population refers to the full group, cross-section is a type of study design, and school is a specific setting not fitting the definition here.

Answer:

sample