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Choose the correct label for the point on the boxplot represented by the question mark:
Max...
Read Morehoose the correct label for the point on the boxplot represented by the question mark:
None of the above...
Read MoreChoose the correct label for the point on the boxplot represented by the question mark:
Q3...
Read MoreA survey taken of 140 sports fans asked the question: "What is the most you have ever spent for a ticket to a sporting event?"
The five-number summary for the data collected is:
min = 85, Q1 = 130, Median = 145, Q3 = 150, Max = 250
Should the smallest observation be classified as an outlier?
YesGood job! The IQR is 150 - 130 = 20. Using the 1.5(IQR) criterion we get 130 - 1.5(20) = 100. Since the smallest observation of 85 is smaller than 100, it should be considered an outlier....
Read MoreA survey taken in a large statistics class contained the question: "What's the fastest you have driven a car (in miles per hour)?" The five-number summary for the 87 males surveyed is:
min = 55, Q1 = 95, Median = 110, Q3 = 120, Max = 155
Should the largest observation in this data set be classified as an outlier?
NoGood job! The IQR in this case is 120 - 95 = 25. Applying the 1.5(IQR) rule, we find: Q3 + 1.5(IQR) = 120 + 1.5(25) = 157.5, and, therefore, the largest observation, 155, should NOT be classified as an outlier. Note, however that in this case: Q1 - 1.5(IQR) = 95 - 1.5(25) = 57.5, and, therefore, t...
Read MoreCommute time to work
RatioThis is correct. This variable is quantitative where it is meaningful to talk about ratios between values (“Because of the accident, the commute home from work was twice as long as yesterday”)....
Read MoreOpinion about Hillary Clinton on a 0-100 scale (0 = extreme dislike to 100 = extreme like)
IntervalThis is correct. This is a quantitative variable where it is not meaningful to talk about ratios between values. If for person X the gives a value of 10 and person Y give a value of 30, it is not meaningful to say that person Y likes Hillary Clinton 3 times as much as person X. Also note tha...
Read MoreOpinion about Hillary Clinton on a 0-100 scale (0 = extreme dislike to 100 = extreme like)
IntervalThis is correct. This is a quantitative variable where it is not meaningful to talk about ratios between values. If for person X the gives a value of 10 and person Y give a value of 30, it is not meaningful to say that person Y likes Hillary Clinton 3 times as much as person X. Also note tha...
Read MoreStudent’s major
NominalThis is correct. The major of a student is a categorical variable with no natural order to the categories....
Read MoreA Building’s height
RatioThis is correct. For this quantitative variable, it is meaningful to talk about ratios (building A is twice as tall as building Y)....
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