Algebra 2 2-5 Independent Practice: Using Linear Models

by Matthew Richardson

| 8 Questions1

10

Describe the correlation in the data represented in the scatter plot below.

Positive correlation

Strong negative correlation

Negative correlation

No correlation

Strong positive correlation

2

10

Make a scatter plot of the set of points.

3

10

Describe the correlation in the data you graphed in the previous item.

No Correlation

Positive Correlation

Strong Positive Correlation

Negative Correlation

Strong Negative Correlation

4

10

The set {(2, 58), (6, 105), (8, 88), (8, 118), (12, 117), (16, 137), (20, 157), (20, 169)} is graphed below.

Sketch a trend line to model the data. Use a contrasting color.

5

10

Writing: How can you determine whether two variables x and y for a real-life situation are correlated?

6

10

Analysis: Do you think a trend line on a graph is always the same as the line of best fit? Why or why not?

7

10

Compare and Contrast: What is the difference between a positive correlation and a negative correlation?

How might you relate positive correlation with direct variation?

8

10

Reflection: Math Success

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