2. Association and Correlation: Correlation
Direction of a Linear Relationship: Covariance
Consider the following #5# pair of observations for #X# and #Y#:
\[\begin{array}{|c|c|}
\hline
X&\,Y\,\\
\hline
4&8\\
8&7\\
9&5\\
2&9\\
2&1\\
\hline
\end{array}\]
Complete the table below.
| #X# | #Y# | #X-\bar{X}# | #Y-\bar{Y}# | #(X-\bar{X})(Y-\bar{Y})# |
| #4# | #8# | |||
| #8# |
#7# | |||
| #9# |
#5# | |||
| #2# |
#9# | |||
| #2# |
#1# |
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