Todd is also studying the effect of popularity on academic success for his research methods project. He decides to measure popularity by asking each elementary school student to tell him how many friends he or she has. He assumes that more friends means the student is more popular. Which of the following best describes this variable?
1. A ratio scale of measurement
2. A qualitative variable
3. A categorical variable
4. An other-report measure

1. A ratio scale of measurement

Explanation:

Todd is also studying the effect of popularity on academic success for his research methods project. He decides to measure popularity by asking each elementary school student to tell him how many friends he or she has. He assumes that more friends means the student is more popular. This variable is best described as a ratio scale of measurement. Ratio scale is a type of variable measurement scale which is quantitative in nature. Ratio scale allows Todd to compare the intervals or differences in his research by asking each elementary school student to tell him how many friends he or she has.

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