Quartiles: a change in the demonstration

Quartiles are usually introduced by lining everyone up tallest to shortest and then finding the quartiles for height. 


This term spheres were substituted and a spreadsheet was prepped to assist during the lecture-demonstration. This went well, especially as having the data on the Smartboard permitted using markers to mark up the data.

The data was the following:

Type Mass (grams)
Ball golf 45.7
Ball ping pong 2.7
BB 0.3
Billiard mini 56.9
Duck marble blue 3.9
Duck marble metal 16.3
Duck marble orange 5.4
Duck marble silver blue 5.1
Duck marble small 1.6
Sphere iron large 234
Sphere iron small 81.5
Superball 22.4
Taw large 54.3
Taw medium 21.2
Taw small 18.9

Which produced the following box plot in Statisty:


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