Consider the boxplot below.

10
20
30
40
50
60
70
80
data
17
27
41
58
73
[Graphs generated by this script: setBorder(15); initPicture(10,80,-3,6);axes(10,100,1,null,null,1,'off');text([38,-3],"data");line([17,2],[17,4]); rect([27,2],[58,4]); line([41,2],[41,4]);line([73,2],[73,4]); line([17,3],[27,3]); line([58,3],[73,3]);fontsize*=.8;fontfill='blue';text([17,4],'17','above');text([27,4],'27','above');text([41,4],'41','above');text([58,4],'58','above');text([73,4],'73','above');fontfill='black';fontsize*=1.25;]

What quarter has the largest spread of data?
Second Quarter
Third Quarter
Fourth Quarter
First Quarter
What is that spread?
Find the Inter Quartile Range (IQR):
Which interval has the most data in it?
55 - 73
27 - 41
42 - 58
17 - 27
What value could represent the 33rd percentile?
49
63
18
31