For each of the following research questions identify the observational units and variable(s). a. An article in a 2006 issue of the Journal of Behavioral Decision Making reports on a study involving 47 undergraduate students at Harvard. All of the participants were given $50, but some (chosen at random) were told that this was a "tuition rebate," while the others were told that this was "bonus income." Aft er one week, the students were contacted again and asked how much of the $50 they had spent and how much they had saved. Researchers wanted to know whether those receiving the "rebate" would tend to save more money than those receiving the "bonus." b. How much did a typical American consumer spend on Christmas presents in 2012? c. Do college students who pull all-nighters tend to have lower grade point averages than those who do not pull all-nighters? d. Is the residence situation of a college student (on-campus, off -campus with parents, off -campus without parents) related to how much alcohol the student consumes in a typical week? e. Can you predict how far a cat can jump based on factors such as its length?
Tintle, Nathan; Chance, Beth L.; Cobb, George W.; Rossman, Allan J.; Roy, Soma; Swanson, Todd; VanderStoep, Jill (2015-09-30). Introduction to Statistical Investigations (Page 14). Wiley. Kindle Edition.