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ISYE2028 A and B
Spring 2009
Sample 1
January 8, 2009
1
Take me out to the ballgame
50 baseball fans were asked to report on the number of games they attended last year. Download
the data baseball.csv from the data folder on the website. Use appropriate graphical and statistical
techniques to present the data. Say more than a little bit about what you see. If you are using
R
,
here are some hints:
baseball<read.csv(file="baseball.csv")
#read.csv() reads in a file
baseball<baseball[,1]
#remember that data, in a data table is
#rows of observations and columns of
#variables. Here, I just need this one
#column
hist(baseball,col="black",density=20)
#draw a histogram, color it black in the
#bars using hatch lines of 20 per inch
abline(v=mean(baseball),col="red",lwd=3)
#draw a vertical line on a plot that
#already exists. here, the mean  in red
abline(v=median(baseball),col="green",lwd=3)
#draw a vertical line on a plot that
#already exists. here, the median  in
#green
stem(baseball)
#a stem and leaf plot
The
R
code is just a starting point. So be creative with what you know. Talk about what other,
unmeasured (i.e.
latent
) factors could determine the distribution you observed. Talk about what
other data you might like to have to say more. Etc. Etc.
1
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Aunt Fanny passed.
..You are rich! Now what?
Your beloved Aunt Fanny has passed and left you a small fortune. Emphasis on the word small
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 Spring '07
 SHIM

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