A researcher wishes to estimate the textbook costs of first-year students at Ferris State University. To do so, he recorded the textbook cost of 200 first-year students and found that their average textbook cost was $275 per semester. The variable of interest to the researcher is
A. textbook cost.
B. class rank.
C. number of students.
D. name of university.
Analysis:
A. Correct. A variable is some characteristic of a population or sample.
B. Incorrect. A variable is some characteristic of a population or sample.
C. Incorrect. A variable is some characteristic of a population or sample.
D. Incorrect. A variable is some characteristic of a population or sample.
ANSWER : A
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Fill in the blanks with correct word
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