Unformatted text preview: l quantitative. response explanatory variable and its type is (circle one) ii. The exam score is a(n) and its type is (circle one) categorical quantitative. c. Fill in the blank. Suppose the students in the “blue paper” group were mostly upper‐classmen and the students in the “red paper” group were mostly first and second‐year students. The variable “class rank” is an example of a(n) Confounding variable. Sections 6.2 – 6.3 discuss key ideas for designing a good experiment and a good observational study. Section 6.4 presents a list of difficulties and disasters in experime...
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- Summer '10
- Statistics, researcher, explanatory variable, red paper, variables. Confounding variables, blue paper