- Pie charts, or circle graphs, show percentage relations on one set of data.
- To make a pie chart,
- Find the percentages of each class
- Multiply 360 by each class percentage, this will give the angle
each "slice" cuts out.
- Example 1, Number 10, page 774
Retail 51.8% x 700 = 363
Services 25.9% x 700 = 181
Other 22.3% x 700 = 156
- Example 2, Number 12, page 775
2 bedrooms 182/600 = 30% .30 x 360 = 108 degrees
3 bedrooms 230/600 = 38% .38 x 360 = 137 degrees
4 bedrooms 100/600 = 17% .17 x 360 = 61 degrees
Other 88/600 = 15% .15 x 360 = 54 degrees.
- Stem and Leaf Displays
- The first digits are the stem
- The remaining digits are the leaf.
- Example 3, Problem 24, page 777
0|3 8 2 5
1|2 8 2 5 9 3 7 6
2|5 1 7 2 3
3|3 4
4|1