Question

13: The value of "Square of r" for a particular situation
is 0.81. What is coefficient of correlation
3424985302
0.81
O 0.9
O 0.09​

Answer 1

Given :- The value of "Square of r" for a particular situation

is 0.81. What is coefficient of correlation

A) 0.81

B) 0.9

C) 0.09

Answer :-

we know that,

• coefficient of correlation is denoted by " r ".
• coefficient of determination is denoted by "r²" .

so, we can say that,

→ coefficient of determination = r² = 0.81 .

then,

→ coefficient of correlation = r = √(r²) = √(0.81) = √(0.9 * 0.9) = √(0.9)² = 0.9 (B) (Ans.)

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