A sample was taken of the verbal test scores of 20 applicants to graduate school at a large midwestern university. Below are tne scores. For convenience, the data are ordered. 310 340 510 520 520 580 630 280 350 370 400 420 420 420 430 480 670 720 750 770 (All answers should be exact calculations.) a. The median is b. The first quartile is | c. The third quartile is d. The IQR is e. The lower fence is f. The upper fence is 9. Is/Are there any outlier(s)? O Both 750 and 770 are outliers. O The value 280 is an outlier. O The value 770 is an outlier. O Both 280 and 770 are outliers. O There are no outliers. h. If 25 points were added to each score, what happens to the resulting standard deviation of the new scores? Olt would increase by 25. Olt would be unchanged. Olt would increase by 5. O t cannot be determined. O t would increase by 625.

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A sample was taken of the verbal test scores of 20 applicants to graduate school at a large midwestern university. Below are the scores. For convenience, the data are ordered.
280 310
480 510 520
420 420 430
720 750 770
340 350 370 400
420
520
580 630
670
(All answers should be exact calculations.)
a. The median is
b. The first quartile is
c. The third quartile is
d. The IQR is
e. The lower fence is
f. The upper fence is
g. Is/Are there any outlier(s)?
O Both 750 and 770 are outliers.
O The value 280 is an outlier.
O The value 770 is an outlier.
O Both 280 and 770 are outliers.
O There are no outliers.
h. If 25 points were added to each score, what happens to the resulting standard deviation of the new scores?
O It would increase by 25.
Oit would be unchanged.
O It would increase by 5.
O It cannot be determined.
Oit would increase by 625.
Transcribed Image Text:A sample was taken of the verbal test scores of 20 applicants to graduate school at a large midwestern university. Below are the scores. For convenience, the data are ordered. 280 310 480 510 520 420 420 430 720 750 770 340 350 370 400 420 520 580 630 670 (All answers should be exact calculations.) a. The median is b. The first quartile is c. The third quartile is d. The IQR is e. The lower fence is f. The upper fence is g. Is/Are there any outlier(s)? O Both 750 and 770 are outliers. O The value 280 is an outlier. O The value 770 is an outlier. O Both 280 and 770 are outliers. O There are no outliers. h. If 25 points were added to each score, what happens to the resulting standard deviation of the new scores? O It would increase by 25. Oit would be unchanged. O It would increase by 5. O It cannot be determined. Oit would increase by 625.
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