Along with your course materials you received by mail you should have received a small box of raisins with instructions to NOT open the box.  Well, you should now open the box, but don't eat the raisins,... at least not for a few more minutes.  We would like you to count the number of raisins in your box, again, before eating any of them, and enter the number of raisins in the box below:
 

The question we are interested in is how many raisins are in one of these small boxes on average?  In other words, what is a typical number of raisins in a box?   Do you think that all the students in the class will have the same number of raisins?  Well, probably not because SunMaid can't probably fill the boxes precisely enough to get exactly the same number of raisins in each box.  How consistent are they in filling the boxes?

We can't examine every box ever filled, but we can examine a small number of boxes, (your boxes), and learn something about how well the boxes are filled.  Let's look at our results.

This display is called a dotplot.  One dot is placed next to the number of raisins found by each student.  For example, in my box of raisins, I got ? raisins.  One of the dots next to ? is from my result.  Where are most of the dots?   Well by looking at the display we can see that most students got somewhere between ? and ? raisins per box.  This display quickly informs us that SunMaid boxes typically have around ? raisins in them.

You will also notice that not all boxes had the same number of raisins in them.  From the display you can see that the values range from ? to ? raisins in each box.  This gives you an idea of how precisely the machines filled the boxes in this batch of raisins.