cach question and all the al éèle on your bubble sheet. tenatives carefully.Circ

Question

cach question and all the al éèle on your bubble sheet. tenatives carefully.Circle the letter of the BEST answer on Questlons on Chapter 1 this shoet, and fill is the corresponding 1. It is known that the populatios of growth Six months later, the rats in the sample are weighed and the results, can mone, a reseacrape weight of S10 grams at age 6 monhs. To est selects a sample ofio new tom fats andnjects each tat with the researcher conclude that the growth hormone (Hint: If the hormone had a the hormone had the effect of adding 18g to the rats weightox inds an average weight of 528 grams. Rased on these had ho eliect, how can you explain the difference betwees the sample average average?) an cflect on the rats in the sample? Explain why or why no and the population the hormone had the effect of adding something to the tats' weit b know exactly how mch the omone might have no effect on the rats weight since the I&g; diflference could bee d. the hormone definitely has no effect on the rats' weight since I8g is not a large enough amoust lo consider as a real 2. A researcher reports that individuals who survived onse heart attack and were given daily likely to suffer a second heart attack than survivors who were given an inactive placebo lnsie identify the independent variable and the dependent variable. doses of aspirin were sigaificantly less instead of aspirin. For this IV: whether the penson has a second b. IV: asp hean atlack DV: aspirin vs. placete Aoceco as dheasPrin c. IV:ahether thepersoalasa first heen made aspirin vs. placebo; DV: whether the 3. A recent report indicales that clderly drivers (over 65 years old) are more likely to be injured in in drivers. Is this study an esperiment? Explain why or why sot. no - we didnt cause them to have accidents rrisutor an"Qper(ment no-we didn't randomly assign them so te olser or yoanper C ase the events ave saansh c. yes-we are stadying the effect of age on likelihood of injuries ( d. yes-the experiment includes an IV and DV and an nal definition of 4. Three researchers are evaluating taste preferences among three leading brands of cola. After part each participant to identify first researcher simply asks each participant to identify his/her favorite. The second researcher asks the colas on a 10- point scale, where a rating of I indicaes "erri I think there's some ambiguity in this question, so to be clear, let's assume that instead of calling one the "favorite the second most preferred, and the least prefemed. The third researcher asks cach participant to rate each of ble taste and 10 indicates "excellent taste. Identify the scale of measurement used by each researcher the first researcher asks participants to identify each cola as same" or "different" from the others (maybe by giving them the same or betweeen a rating of 4 and 6 is the same as the difference between a 6 and 8. different letter or number code); and again, just to be clear. let's assume that the thind rescarcher believes the difference nominal; ordinal; interval interval, ordinal: nonínal nominal; interval; ordinal ordinal; interval; ratio ial eitterence maves mathinc eatio a. b. Questions on Chapter 2 5. If it is appropriate to use a histogram to show the frequencydistribution for a sct of scores, would it also be appropriate to show the same set of scores in a bar graph? explanation required, just yes or no yes pony

Explanation / Answer

1. Answer is (b)

2. Answer is (b)

Independent variable: aspirin vs placebo

Dependent variable: whether the person has a second heart attack

Because second heart attack is dependent on whether the person took aspirin or placebo

3. Answer is (a)

This is rather an observational study

4. The answer is (a) nominal , ordinal , interval

The first one is nominal : just same or different , only labelling

Second one ordinal : because the order of variable is important

Third interval: not just the order , but the difference also known

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.