1. One Variable vs. Two Variable Data

2. One Variable Data
One-variable data sets give measures of ONE ATTRIBUTE.

3. Some Examples…….

4. You can recognize one-variable situations when you see:
Tally charts
Frequency tables
Bar graphs
Histograms
Pictographs
Circle graphs

5. Two Variable Data
Two-variable data sets give measures of two attributes for each item in a sample.

6. Some Examples…….

7. You can recognize two-variable situations when you see…..
Ordered pairs
Scatter plots
Two-column tables of values

8. One OR Two Variable Data?
Noah researches annual hours of sunshine in Canadian cities
A study compared the length of time children spend playing video games and the time they spend reading

9. Fill in the blanks…… As population of a city increases, increases.
decreases.
As temperature increases,