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How Can We Describe the Relationship between two sets of Quantitative Data? 1.

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Presentation on theme: "How Can We Describe the Relationship between two sets of Quantitative Data? 1."— Presentation transcript:

1 How Can We Describe the Relationship between two sets of Quantitative Data? 1

2 2

3 3

4  Here is how to do it by hand: 4

5 5 xy 19160-1.1061-1.05361.1654 23184-.8427-.8952.7544 37324.0790.0290.0023 44412.5399.6100.3293 565181.32991.30981.7419

6 6 ElevationTemperature 1542 ft74 F 2238 ft73 F 5426 ft70 F 8634 ft58 F  Calculate the Correlation Coefficient  r = -.951  What does the negative value reveal about the data?

7 7 ElevationTemperature 1542 ft74 F 2238 ft73 F 5426 ft70 F 8634 ft58 F  Let’s get the TI – 84 to do all this tedious work for us  Web link to a good graphing calculator regression:  http://www.youtube.com/watch?v=nw6GOUtC2jY http://www.youtube.com/watch?v=nw6GOUtC2jY

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