1'9 Graphing Data on the Coordinate Plane Cont'

1
1.9 Graphing Data on the Coordinate Plane (Cont.)

• 10/6/08
• A scatter plot a graph that relates two groups
  of data.
• Most scatter plots are in the first quadrant of a
  coordinate plane, because the data are usually
  positive numbers.

2
Scatter Plot
3
Scatter Plots

• Positive correlation in general, both sets of
  data increase together.
• Negative correlation in general, one set of
  data decreases as the other set increases.
• No correlation sometimes data sets are not
  related.
• Trend line shows a correlation more clearly

Negative Correlation
No Correlation
Positive Correlation
4
More Practice!!!!

• Textbook p. 63 16 22, 25 28, p. 69 58
  65.
• HOMEWORK Worksheet 1.9