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Rudy Researcher is interested in conducting a study regarding the drink preferences of the students on...

Rudy Researcher is interested in conducting a study regarding the drink preferences of the students on the University of Alabama campus.  He believes that if a student on campus drinks mostly water, that they will receive higher grades than other individuals that drink either soda or coffee.  In running the study, Rudy will place students into groups and have them drink water, soda or coffee for 2 weeks, then look at their score on an exam of out 100 points.

a. What would be the population in this study?

b. Is this study experimental or observational?

c. What is the dependent variable?

d. What level of measurement is the dependent variable?

e. What is the independent variable?

f. What is the level of measurement for the independent variable?

math   Statistics-And-Probability   
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Answer #1

a) The population in this study : students

b) observational study

c) dependent variable - core on an exam of out 100 points

d) The level of measurement for dependent variable - ratio

e) independent variable - drink (two factors - water or soda/coffee)

f) The level of measurement for independent variable - nominal

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