Question

y is regressed on x1, x2, and x3 giving R2adj= 0.87. Y is then regressed on...

y is regressed on x1, x2, and x3 giving R2adj= 0.87. Y is then regressed on x1, x2, x3, and x4, giving R2adj = 0.86. What does this indicate?

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The adjusted R-square gives percentage of variation explained by only those independent variables that, in reality, affect the dependent variable. Importantly, it's value increases only when the new term improves the model fit what would be obtained by probability.

The adjusted R-square value actually decreases when term doesn't improves the model fit by a sufficient amount.

So , Y regressed on x1,x2,x3 and x4 gives R-square adjusted=0.86(decreases) implies that x4 does not improves the model.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Suppose x1, x2, x3, x4 is linearly independent in V . Prove that x1 − x2,...
Suppose x1, x2, x3, x4 is linearly independent in V . Prove that x1 − x2, x2 − x3, x3 − x4, x4 is also linearly independent in V
Y = constant X1,X2,X3~N(mu,sigma^2) P(X1>Y AND X1+X2>2Y AND X1+X2+X3>3Y) = ?
Y = constant X1,X2,X3~N(mu,sigma^2) P(X1>Y AND X1+X2>2Y AND X1+X2+X3>3Y) = ?
Find the number of solutions to x1+x2+x3+x4=16 with integers x1 ,x2, x3, x4 satisfying (a)  xj ≥...
Find the number of solutions to x1+x2+x3+x4=16 with integers x1 ,x2, x3, x4 satisfying (a)  xj ≥ 0, j = 1, 2, 3, 4; (b) x1 ≥ 2, x2 ≥ 3, x3 ≥ −3, and x4 ≥ 1; (c) 0 ≤ xj ≤ 6, j = 1, 2, 3, 4
Let X1 , X2 , X3 , X4 be a random sample of size 4 from...
Let X1 , X2 , X3 , X4 be a random sample of size 4 from a geometric distribution with p = 1/3. A) Find the mgf of Y = X1 + X2 + X3 + X4. B) How is Y distributed?
Give augmented matrix for this system. Find all solutions to this system. Indicate all parameters. x1-x2+x3+x4=1...
Give augmented matrix for this system. Find all solutions to this system. Indicate all parameters. x1-x2+x3+x4=1 2x2+3x3+4x4=2 x1-x2+2x3+3x4=3 x1=? x2=? x3=? x4=?
2. Find the number of integer solutions to x1 + x2 + x3 + x4 +...
2. Find the number of integer solutions to x1 + x2 + x3 + x4 + x5 = 50, x1 ≥ −3, x2 ≥ 0, x3 ≥ 4, x4 ≥ 2, x5 ≥ 12.
Suppose X1, X2, X3, and X4 are independent and identically distributed random variables with mean 10...
Suppose X1, X2, X3, and X4 are independent and identically distributed random variables with mean 10 and variance 16. in addition, Suppose that Y1, Y2, Y3, Y4, and Y5are independent and identically distributed random variables with mean 15 and variance 25. Suppose further that X1, X2, X3, and X4 and Y1, Y2, Y3, Y4, and Y5are independent. Find Cov[bar{X} + bar{Y} + 10, 2bar{X} - bar{Y}], where bar{X} is the sample mean of X1, X2, X3, and X4 and bar{Y}...
How many integral solutions of x1 + x2 + x3 + x4 = 33 satisfy 4...
How many integral solutions of x1 + x2 + x3 + x4 = 33 satisfy 4 ≥ x1 ≥ 2, x2 ≥ 0, x3 ≥−5, and x4 ≥ 7?
Find the number of 5-lists of the form (x1, x2, x3, x4, x5), where each xi...
Find the number of 5-lists of the form (x1, x2, x3, x4, x5), where each xi is a nonnegative integer and x1 + x2 + x3 + x4 + 3x5 = 12. Does this have to be answered by cases or is there a systematic way to determine all of the possibilities?
Suppose that we have a sample space with six equally likely experimental outcomes: x1, x2, x3,...
Suppose that we have a sample space with six equally likely experimental outcomes: x1, x2, x3, x4, x5, x6, and that A = { x2, x3, x5} and B = { x1, x2} and C= {x1, x4, x6}, then P(A ∩ B) =
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT