Gregg K. answered • 12/06/16
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If you create a scatter plot there is clear negative trend
therefore answer must be -.75 or -.83
ANSWER: -.83
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Gregg K.
tutor
the x average is 3
the y average is 4
now we will find x minus xavg and y minus yavg for each value
-1 2 0 -1
0 -2 1 1
Now multiply columns
0 -4 0 -1 and add -5
now also square our differences
1 4 0 1
0 4 1 1
add row 1 : 6
add row 2: 6
Final answer -5/sqrt(6*6) -5/sqrt(36) = -5/6
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12/06/16