If cov(x,y)= 7.5075 and $s _ { x } ^ { 2 } = 3.5$ ,then the sample slope coefficient is 2.145.

Name: If cov(x,y)= 7.5075 and $s _ { x } ^ { 2 } = 3.5$ ,then the sample slope coefficient is 2.145.
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Question

Quizplus · Accepted Answer

The formula for calculating the sample slope coefficient b is: 
$$b = \frac{cov(x,y)}{s_x^2}$$
Substituting the given values, we get: 
$$b = \frac{7.5075}{3.5} \approx 2.145$$
Therefore, the given statement is true, and the answer is A.

If Cov(x,y)= 7 sx2=3.5s _ { x } ^ { 2 } = 3.5sx2​=3.5

If Cov(x,y)= 7 $s _ { x } ^ { 2 } = 3.5$