1. On your white boards write down:
Quick Start
On your white boards write down:
What are the five W’s of Statistics
the difference between quantitative data and categorical data

2. Chapter 3 Graphing Categorical Data
Objective: Students will be able to interpret graphs made from categorical data

3. Proportions
In data analysis we don’t just want numbers we want proportions. Do you know another math word for proportions?
Percentages

4. Percentages Practice Give me the percentage for each fraction: 4/5
20/100
Three out of five people have siblings
10/20
Three quarters of the football team are seniors

5. The Area Principle
The area principle says that the area occupied by a part of the graph should correspond to the size of the value it represents.

6. Bar Charts
Displays the distribution of a categorical variable, showing the counts for each category next to each other for easy comparison.

7. Classwork: Making a Bar Graph
What kind of music do you like?
Rand B
EDM
Country
Rock
Alternative
Pop 5 2 6 1 4

8. Classwork: Making a Bar Graph
What kind of pet do you own?
Dog
Cat
Rabbit
Reptile
Bird
Fish 24 7 3 2 10

9. Pie Charts
Show the whole group of cases as a circle. They slice the circle into pieces whose sizes are proportional to the fraction of the whole in each category.

10. Classwork: Making a Pie Chart
Taking our data from the pet question. We will make a pie chart using that data.
Step one when making a pie chart is to always use percentages!!!!

11. Contingency Tables Blue Brown Green/Hazel/Other Total Male 1 7 3 11
Female 9 2 12 16 5 23

12. Get percentages from our Table
How many boys have brown eyes?
How many girls have blue eyes?

13. On your white boards answer:
Exit Ticket
On your white boards answer:
What is another word for proportions?
What kind of graph do you use percentages?
What graph do you like better Pie or Bar?