0.16
-0.4
-0.16
0.4
Answer is Wrong!
Answer is Right!
The correct answer is $\boxed{\text{A) }+0.16}$.
The coefficient of correlation is a measure of the strength and direction of the linear relationship between two variables. It is calculated by taking the square root of the product of the two regression coefficients. In this case, the two regression coefficients are 0.8 and 0.2, so the coefficient of correlation is $\sqrt{0.8 \times 0.2} = +0.16$.
A positive coefficient of correlation indicates that there is a positive linear relationship between the two variables, meaning that as one variable increases, the other variable also tends to increase. A negative coefficient of
213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube