which statement is true regarding variation in the explanatory variable?
A. it affects the estimate of 
1
B. It affects variance of estimate of
1
C. Both of the above are true
D. Neither of the above is true
Homework Answers
Answer:
The variation in the explanatory variable affects both the estimate of its beta coefficient and variance of the coefficient.
Thus option C (i.e. Both the above are true) is the correct answer.
Add Answer to:
which statement is true regarding variation in the explanatory
variable?
A. it affects the estimate of...
Assume a model with 1 numerical explanatory variable (x1) and 1 categorical explanatory variable with 2...
Assume a model with 1 numerical explanatory variable (x1) and 1
categorical explanatory variable with 2 category levels (Red,
Blue). Further assume the model includes the possibility that the
relationship between the numerical explanatory variable and the
response depends on the levels of the categorical variable (include
an interaction between the numerical and categorical variable).
x2 is defined to
take the value of 1 for Red and 0 for Blue.
The population model is
μy=β0+β1x1+β2x2+β3x1x2
The simplified version of the...
Which of the following is conrect regarding the relationship between the dummy variable estimator and the...
Which of the following is conrect regarding the relationship between the dummy variable estimator and the within estimator? (T denotes the time- series length of the data) (a) The two estimators always give the exact same 1.13. (b) The two estimators give the exact same (c) The two estimators give the exact same (d) The two estimators always do not give the same coefficients coefficients if T-2. coefficients ifT> 2. coefficients We were unable to transcribe this imageWe were unable...
which of the following procedures will yield the same estimate of 1 as in multiple regression...
which of the following procedures will yield the same estimate
of
1 as in multiple regression
Y=0
+
1122+U
?
A. Run Y on
1, predict residual
1; run Y on
2, predict residual e2; run e1 on e2
B. Run X2 on X1 predict residual e; run e on Y
C.Run Y on X1 predict residual e1; run X2 on X predict residual
e2; run e1 on e2
E. none of the above
We were unable to transcribe this...
A probability density function f of a continuous random variable x satisfies all of the following...
A probability density function f of a continuous random variable
x satisfies all of the following conditions except
a)
b)
c) For any a,b with
, P()
=
d) The mean and variance of a probability density function f are
both finite
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Consider a variation of Newton's method in which only one derivative is needed, that is, Find...
Consider a variation of Newton's method in which only one
derivative is needed, that is,
Find and such that
, where
, and is the exact zero
of .
Pn+1 = Pn + f'(Pn) We were unable to transcribe this imageWe were unable to transcribe this imageCn+1 = Ce en = PnP We were unable to transcribe this imagef(x) = 0
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PLEASE ANSWER ALL THE POINTS AND WRITE CLEARLY AND EXPLAIN THANK YOUU!! 1. Consider the following...
PLEASE ANSWER ALL THE POINTS AND WRITE CLEARLY AND EXPLAIN THANK
YOUU!!
1. Consider the following linear regression model: (a) which assumptions are needed to Inake the A i unbiased estimators for the ßi? (b) Explain how one can test the hypothesis that +A-0 by means of a t-test. We were unable to transcribe this image(d) Suppose that r is an irrelevant explanatory variable in the population model and that you estimate the model including both r1 and r2. What...
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Let Which of the following are TRUE? Select ALL that apply. Please show all your work....
Let
Which of the following are TRUE? Select ALL that apply. Please
show all your work.
a.
has a local maximum at
whenever
is an even integer
b.
has a saddle point at
whenever
is an even integer
c.
has a saddle point at
whenever
is an odd integer
d.
has a local minimum at
whenever
is an odd integer
fr, y) = sin(x + 7/2) +y? We were unable to transcribe this imageWe were unable to transcribe this imageWe...
solution , estimate the temperature at which FeOs can be reduced to Using data in Appendix...
solution , estimate the temperature at which FeOs can be reduced to Using data in Appendix 1 ron, using hydrogen gas as a reducing agent (assume H O(g) is the other product). We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this image
Assume a model with 1 numerical explanatory variable (x1) and 1
categorical explanatory variable with 2 category levels (Red,
Blue). Further assume the model includes the possibility that the
relationship between the numerical explanatory variable and the
response depends on the levels of the categorical variable (include
an interaction between the numerical and categorical variable).
x2 is defined to
take the value of 1 for Red and 0 for Blue.
The population model is
μy=β0+β1x1+β2x2+β3x1x2
The simplified version of the...
Which of the following is conrect regarding the relationship between the dummy variable estimator and the within estimator? (T denotes the time- series length of the data) (a) The two estimators always give the exact same 1.13. (b) The two estimators give the exact same (c) The two estimators give the exact same (d) The two estimators always do not give the same coefficients coefficients if T-2. coefficients ifT> 2. coefficients We were unable to transcribe this imageWe were unable...
which of the following procedures will yield the same estimate
of
1 as in multiple regression
Y=0
+
1122+U
?
A. Run Y on
1, predict residual
1; run Y on
2, predict residual e2; run e1 on e2
B. Run X2 on X1 predict residual e; run e on Y
C.Run Y on X1 predict residual e1; run X2 on X predict residual
e2; run e1 on e2
E. none of the above
We were unable to transcribe this...
A probability density function f of a continuous random variable
x satisfies all of the following conditions except
a)
b)
c) For any a,b with
, P()
=
d) The mean and variance of a probability density function f are
both finite
We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this image
Consider a variation of Newton's method in which only one
derivative is needed, that is,
Find and such that
, where
, and is the exact zero
of .
Pn+1 = Pn + f'(Pn) We were unable to transcribe this imageWe were unable to transcribe this imageCn+1 = Ce en = PnP We were unable to transcribe this imagef(x) = 0
Question 3 (1 point) Saved Which of the following is NOT true regarding the function of a specific reproductive organ or tissue? Urethra: transfer sperm from the epididymis past seminal vesicles to prostate to carry semen to the vas deferens Uterus: implantation and development of the embryo Fallopian tube: guides a mature ovum from the ovary to the uterus O Ejaculatory duct: control the flow of semen and urine through the urethra Question 4 (1 point) Saved Which of the...
PLEASE ANSWER ALL THE POINTS AND WRITE CLEARLY AND EXPLAIN THANK
YOUU!!
1. Consider the following linear regression model: (a) which assumptions are needed to Inake the A i unbiased estimators for the ßi? (b) Explain how one can test the hypothesis that +A-0 by means of a t-test. We were unable to transcribe this image(d) Suppose that r is an irrelevant explanatory variable in the population model and that you estimate the model including both r1 and r2. What...
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Let
Which of the following are TRUE? Select ALL that apply. Please
show all your work.
a.
has a local maximum at
whenever
is an even integer
b.
has a saddle point at
whenever
is an even integer
c.
has a saddle point at
whenever
is an odd integer
d.
has a local minimum at
whenever
is an odd integer
fr, y) = sin(x + 7/2) +y? We were unable to transcribe this imageWe were unable to transcribe this imageWe...
solution , estimate the temperature at which FeOs can be reduced to Using data in Appendix 1 ron, using hydrogen gas as a reducing agent (assume H O(g) is the other product). We were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this imageWe were unable to transcribe this image
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