Calculate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the y-values. Then calculate it again, letting Row 2 represent the x-values and Row 1 the y-values. What effect does switching the variables have on r?
Row 1 |
---|
12
21
38
48
54
66
76
Row 2 |
---|
177
198
194
133
156
117
173
Calculate the correlation coefficient r, letting Row 1 represent the x-values and Row 2 the y-values.
There is negative correlation between variables x and y
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