1. Scatter plots and Trend lines
Objective:
Learn to read and interpret scatter plots.
Learn to draw trend lines.

2. POSITIVE RELATIONSHIP NEGATIVE RELATIONSHIP
Scatter plots are used to investigate the relationship between two sets of numbers.
A scatter plot with a
POSITIVE RELATIONSHIP
A scatter plot with a
NEGATIVE RELATIONSHIP
When 2 sets of data increase at the same time, the sets show a positive relationship. A scatter plot of a positive relationship slants upward to the right.
When 1 set of data increases as the other decreases, the set shows a negative relationship. A scatter plot of a negative relationship slants downward to the right.

3. When sets of data show a positive or negative relationship, you can draw a trend line to approximate the data.
By extending the trend line you can make predictions about the future.
When 2 sets of data neither increase nor decrease together, they show no relationship

4. Homework: Scatter plots
Determine whether each data set shows a positive, a negative, or no relationship.

5. If you haven’t brought your M&M bag (regular size),
Homework:
If you haven’t brought your M&M bag (regular size),
please bring it by Monday/Tuesday plus any materials you might want to use to decorate your project next week. 