A study is conducted concerning the age of college freshmen. Would you expect th
ID: 3206772 • Letter: A
Question
A study is conducted concerning the age of college freshmen. Would you expect the standard deviation to be about a month, about a year, or about five years? (b) A study is conducted concerning the income of adults in the United States. Would you expect the mean and the median incomes to be the same? Why or why not? (c) A study is conducted concerning the GPA of graduate students. Would you expect the correlation between students' undergraduate GPA and their graduate GPA to be closest to -1, -0.5, 0, 0.5, or 1?Explanation / Answer
A. We talk about age in terms of years and therefore the standard deviation should be in months and not years
B. Mean will not be same as the median. This is because the mean will skew towards to higher or the lower salaries whereas the median will give the central value of salary
C. Since the graduate GPA will be not dependent on the undergraduate GPA therefore it shoud be 0 correlation
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