Blood cocaine concentration (mg/L) was determinedboth for a sample of individuals who had died fromcocaine-induced excited delirium (ED) and for a sampleof those who had died from a cocaine overdose withoutexcited delirium; survival time for people in bothgroups was at most 6 hours. The accompanying datawas read from a comparative boxplot in the article“Fatal Excited Delirium Following Cocaine Use” (J.of Forensic Sciences, 1997: 25–31). ED 0 0 0 0 .1 .1 .1 .1 .2 .2 .3 .3.3 .4 .5 .7 .8 1.0 1.5 2.7 2.83.5 4.0 8.9 9.2 11.7 21.0Non-ED 0 0 0 0 0 .1 .1 .1 .1 .2 .2 .2.3 .3 .3 .4 .5 .5 .6 .8 .9 1.01.2 1.4 1.5 1.7 2.0 3.2 3.5 4.14.3 4.8 5.0 5.6 5.9 6.0 6.4 7.98.3 8.7 9.1 9.6 9.9 11.0 11.512.2 12.7 14.0 16.6 17.8 a. Determine the medians, fourths, and fourth spreadsfor the two samples.b. Are there any outliers in either sample? Any extremeoutliers?c. Construct a comparative boxplot, and use it as abasis for comparing and contrasting the ED andnon-ED samples.
Blood cocaine concentration (mg/L) was determined
both for a sample of individuals who had died from
cocaine-induced excited delirium (ED) and for a sample
of those who had died from a cocaine overdose without
excited delirium; survival time for people in both
groups was at most 6 hours. The accompanying data
was read from a comparative boxplot in the article
“Fatal Excited Delirium Following Cocaine Use” (J.
of Forensic Sciences, 1997: 25–31).
ED 0 0 0 0 .1 .1 .1 .1 .2 .2 .3 .3
.3 .4 .5 .7 .8 1.0 1.5 2.7 2.8
3.5 4.0 8.9 9.2 11.7 21.0
Non-ED 0 0 0 0 0 .1 .1 .1 .1 .2 .2 .2
.3 .3 .3 .4 .5 .5 .6 .8 .9 1.0
1.2 1.4 1.5 1.7 2.0 3.2 3.5 4.1
4.3 4.8 5.0 5.6 5.9 6.0 6.4 7.9
8.3 8.7 9.1 9.6 9.9 11.0 11.5
12.2 12.7 14.0 16.6 17.8
a. Determine the medians, fourths, and fourth spreads
for the two samples.
b. Are there any outliers in either sample? Any extreme
outliers?
c. Construct a comparative boxplot, and use it as a
basis for comparing and contrasting the ED and
non-ED samples.
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