Thursday Homework (Go GMen!)

Almost done with another week!

Tonight, please complete:

page 91: 9 (but don't check by hand!), 13, 19, 24, 29


Answers to 24:
a.) April
b.) February
c.) August
d.) Both distributions of ozone level for January and June appear to be fairly symmetric; there were two years with ozone levels consider outliers in June, but no outliers in January. The median ozone level for January is slightly less than that of June. Ozone levels in January were much more variable, as it had both a higher range and higher interquartile range (IQR)--in other words, ozone levels in June were more consistent.

e.) Median ozone levels generally increase from January to APril, then decrease from April through October, before again rising again from October to January to April--it appears this is a cycle (in changes in ozone level). The ozone levels are more variable (spread out) in the winder months, and increase in consistency ffrom March Through August (as the interquartile ranges and ranges generally decrease over this time).

And just a heads up--tomorrow you'll have another multiple choice (pop!) quiz, but this time on your own--so do an extra-nice job on tonight's homework! The questions are more difficult than the first three, and are generally about boxplots and other types of quantitative displays (dotplots, histograms, stemplots).   After that we'll do a couple things in groups--lots of graded work tomorrow!