What is the dependent variable for: 1) A toothpaste manufacturer claims that children brushing their teeth daily with his company’s product (Brand A) will have fewer cavities than children using Brand X. In a carefully supervised study, the number of cavities in a sample of children using brand A toothpaste was compared with the number of cavities among children using Brand X. 2) A researcher wished to increase the predictability of student pilot scores on the FAA’s written exam. He collects information about the number of hours of ground school and FAA’s exam scores for a sample of student pilots. 3) A political analyst wants to know whether the political slant of a newspaper affects the voting preference of its readers. A random sample of homes was selected where the liberal newspaper was delivered. A random sample of homes receiving the conservative newspaper was selected. The voting preference of each head of household was obtained and categorized as Liberal, Conservative, or Other.
What is the dependent variable for:
1) A toothpaste manufacturer claims that children brushing their teeth daily with his company’s product (Brand A) will have fewer cavities than children using Brand X. In a carefully supervised study, the number of cavities in a sample of children using brand A toothpaste was compared with the number of cavities among children using Brand X.
2) A researcher wished to increase the predictability of student pilot scores on the FAA’s written exam. He collects information about the number of hours of ground school and FAA’s exam scores for a sample of student pilots.
3) A political analyst wants to know whether the political slant of a newspaper affects the voting preference of its readers. A random sample of homes was selected where the liberal newspaper was delivered. A random sample of homes receiving the conservative newspaper was selected. The voting preference of each head of household was obtained and categorized as Liberal, Conservative, or Other.
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