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Cut and paste the following code into R.
barplot(c(1,4,3,0.5),c(20,20,30,30),space=0,
  col=c("white","gray","white","white"),
  main="Histogram of Exam Scores", xlab="Score Points")
axis(1)

Look at the generated picture. Suppose that the gray bar is actually missing (we don't know its height) but we are told that the fat block next to it represents 50entries in the list. How tall is the missing block?
  • 2.5
  • 1.25
  • 2.75
  • 3
  • 3.25
  • *****
    calculator


    Carlos Rodriguez <carlos@math.albany.edu>
    This problem was contributed by a student. It is offered as it is with no warranty of any kind
    Last modified:Wed Sep 02 2009 16:54:28 GMT-0400 (Eastern Daylight Time)