Ch 6. Scatterplots, Association, and Correlation

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4 Terms

1
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What is the variable of interest called ?

response/ dependent variable

2
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What do we call a variable where we see the effects on the response variable?

explanatory / independent variable

3
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What are the 3 aspects we tend to look at to describe the overall pattern of a scatterplot?

form, direction & strength of an relationship

4
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How do you know if the data is well described by the normal?

If the points on the normal probability plot (normal z-scores) lie close to the straight line.