1.3 A researcher would like to evaluate the claim that large doses of vitamin C

Question

1.3 A researcher would like to evaluate the claim that large doses of vitamin C can help prevent the common cold. One group of participants is given a large dose of the vitamin (500 mg per day), and a second group is given a placebo (sugar pill). The researcher records the number of colds each individual experiences during the 3-month winter season a. Identify the dependent variable for this study. b. Is the dependent variable discrete or continuous? c. What scale of measurement (nominal, ordinal, or interval ratio) is used to measure the dependent variable? d What is the independent variable? e. What research method is being used (experimental or correlational?

Explanation / Answer

a) From the given information, Common cold condition for people during the 3 month winter season.

b) Discrete , because cold conditions are not measurable and not countable.

c) Ordinal because there should be normal level and low impact and high impact cold conditions

d) vitamin C and sugar pill dose are independent variables,

e) Experimental research, because cold condition is not measurable and not analyse with quantitative statistical tools.

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