Which one is correct? If the measurements are quantitative (e.g. Weight) and tak
ID: 3225260 • Letter: W
Question
Which one is correct? If the measurements are quantitative (e.g. Weight) and taken twice from each subject observed (e.g. subject's weight before and after dieting), the analysis will involve the mean of differences of measurements of each subject. If the measurements are quantitative (e.g.GPA) and taken from two distinct groups (e.g. Graduate, Undergraduate) the analysis will involve comparing two independent proportions. If the measurements are categorical (e.g. Yes or No to the question "Do you smoke?") and taken from two distinct group (e.g. Female, Male) the analysis will involve comparing two independent means.Explanation / Answer
Answer: If the measurements are quantitative (e.g., Weight) and taken twice from each subject observed (e.g., subjects observed (e.g., subjects weight before and after dieting), the analysis will involve the mean of differences of measurements of each subject.
Explanations: In the first case we take the mean of the differences so this is correct. In second case we find that they are independent (quantitative) samples as the data came from two colleges and finding proportions but this is not the case of proportions; this is not correct. In the third case we find that the variable is categorical (e.g. Yes or No), here we cannot take the mean value for analysis so this is not correct.
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