Show That If $Y = a X + b ( a \neq 0 ) \text {, then } \operatorname { Corr } ( X , Y ) = + 1 \text { or } - 1$

question 11

Essay

Show that if $Y = a X + b ( a \neq 0 ) \text {, then } \operatorname { Corr } ( X , Y ) = + 1 \text { or } - 1$ Under what conditions will $\rho = + 1 ?$

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Definitions:

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