Editing Statistics and Statistical Programming (Winter 2017)/Problem Set: Week 7
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::(d) It's important to be able to import tables directly into your word processor without cutting and pasting individual cells. Can you export the ''output'' of your table? There are a bunch of functions you can use to do this. I used the "xtable" package but I think that <code>write.table()</code> and Excel would do the job just as well. | ::(d) It's important to be able to import tables directly into your word processor without cutting and pasting individual cells. Can you export the ''output'' of your table? There are a bunch of functions you can use to do this. I used the "xtable" package but I think that <code>write.table()</code> and Excel would do the job just as well. | ||
: '''PC2.''' At the [[Community Data Science Workshops]] we had two parallel afternoon sessions on Day 1. In my session, there were 42 participants. In Tommy Guy's session, there were only 19. The next week (Day 2), we asked folks to raise their hands if they had been in Tommy's session (14 did ) and how many had been in mine (31 did). There was clearly attrition in both groups! Was there ''more'' attrition in one group than another? Try answering this both with a test of proportions (<code>prop.test()</code>) and with a <math>\chi^2</math>. Compare your answers. Is there convincing evidence that there is a dependence between instructor and attrition? | : '''PC2.''' At the [[Community Data Science Workshops]] we had two parallel afternoon sessions on Day 1. In my session, there were 42 participants. In Tommy Guy's session, there were only 19. The next week (Day 2), we asked folks to raise their hands if they had been in Tommy's session (14 did ) and how many had been in mine (31 did). There was clearly attrition in both groups! Was there ''more'' attrition in one group than another? Try answering this both with a test of proportions (<code>prop.test()</code>) and with a <math>\chi^2</math>. Compare your answers. Is there convincing evidence that there is a dependence between instructor and attrition? | ||
== Statistical Questions from OpenIntro §6 == | == Statistical Questions from OpenIntro §6 == |