Question

A study of bone density on 5 random women at a hospital produced the following results....

A study of bone density on 5 random women at a hospital produced the following results.

Age   Bone Density
48   359
62   350
63   336
63   327
65   319

Step 3 of 5:

Calculate the estimated variance of slope, s2b1sb12. Round your answer to three decimal places.

Math   Statistics-And-Probability   
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Answer #1

SSE =Syy-(Sxy)2/Sxx= 383.227
s2 =SSE/(n-2)= 127.7425
std error σ              = =se =√s2= 11.3023
estimated variance of slope Var(β1) =s2/Sxx= 0.670
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