1. August 25, 2010 3

2.  Passengers on the Titanic by class of ticket. ClassCount 1 st 325 2 nd 285 3 rd 706 4 th 885

3. 1. Make a Picture! 2. Make a Picture! 3. Make a Picture!

4.  Pile together things that seem to go together.  This helps us to see how the cases distribute across several categories.

5.  Table that records the totals and category names.  Relative Frequency Table  Displays the percentages, rather than the actual counts.

6. ClassCount 1 st 325 2 nd 285 3 rd 706 4 th 885 Class% 1 st 14.77 2 nd 12.95 3 rd 32.08 4 th 40.21

7.  Area Principle  The area occupied by a part of the graph should correspond to the magnitude of the value it represents.

8.  Displays the distribution of a categorical variable, showing the counts of each category adjacent to each other.  Relative Frequency Bar Chart  Using the percentage of each category instead of the actual count

9.  Whole group is a circle  Each slice is a category whose size is proportional to the fraction of the whole in each category.

10.  Use a bar or pie chart when the data are counts or percentages.

11.  Read pgs. 20 – 24  Pg. 36 – 37  #’s 1 – 8 (omit 4), 10