SOLUTION: Sum X squared= X 2 4 1 5 3 Y 15 25 10 40 30 r = The r vale indicates: a. moderately weak negative correlation between x and y b. moderately strong negative correlation

Question 316239: Sum X squared=
X 2 4 1 5 3
Y 15 25 10 40 30
r =
The r vale indicates:
a. moderately weak negative correlation between x and y
b. moderately strong negative correlation between x and y
c. weak positive correlation between x and y.
d. strong coorelation between x and y.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

From graphing the points you see that there is a pretty good linear correlation.
d) is the correct answer.
SSXX=10
SSYY=570
SSXY=70
b=SSXY/SSXX=7
b'=SSXY/SSYY=0.122
r^2=b*b'=0.86
a=3

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.
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