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Finding the Correlation Coefficient
Code
<_data >
<foo >1</foo><bar >3</bar>
<foo >2</foo><bar >7</bar>
<foo >3</foo><bar >1</bar>
<foo >4</foo><bar >2</bar>
<foo >5</foo><bar >8</bar>
<foo >6</foo><bar >4</bar>
<foo >7</foo><bar >9</bar>
<foo >8</foo><bar >5</bar>
<foo >9</foo><bar >10</bar>
<foo >10</foo><bar >6</bar>
</_data>

# corr(foo,bar) #
Output

0.51515
Ref

x.5503

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