Title: Which of the following explains interaction in a multiple regression model? a.Interaction ...
Post by: djutopia on Mar 3, 2018
Which of the following explains interaction in a multiple regression model?
a.Interaction always occurs when there are more than two predictors in a model.
b.Interaction occurs when two independent variables do not depend on the value of each other when determining their effect on the dependent variable.
c.Interaction occurs when the effect on the dependent variable of a change in one predictor, holding the other constant, depends on where that other variable is held constant.
d.The interaction effect is always equal to zero.
Q. 2
Which of the following is a first order model?
a.y = 2.1 + 1.3x1 + 4.1x2 + 0.5x1x2
b.y = 2.1 + 1.3x1 + 4.1x2
c.y = 2.1 + 0.5log(x1)
d.y = 2.1 + 1.3x12
Q. 3
What is the 95 confidence interval for the coefficient of Section?
a.(-0.184, 0.504)
b.(0.004, 0.008)
c.(-1.05, 0.683)
d.(-1.23, 0.865)
Q. 4
What is the value of
a.49.1
b.It depends on the values of Harvest and Rate.
c.80.6
d.15.1
Q. 5
When
a.useless
b.perfect
c.good
d.poor
Q. 6
When
a.useless
b.perfect
c.good
d.poor
Q. 7
When R2 = 0, which other value is necessarily zero?
a.
b.
c.SS(Residual)
d.F
Q. 8
In an analysis of variance for a multiple regression model, what does a large value of the test statistic, F, indicate?
a.Most of the variation in y is unexplained by the regression equation and the model is not useful.
b.Most of the variation in y is explained by the regression equation and the model is useful.
c.There is a lot of error in the model.
d.We should not reject the null hypothesis.
Title: Which of the following explains interaction in a multiple regression model? a.Interaction ...
Post by: paroz on Mar 3, 2018
correct: c
correct: b
correct: d
correct: d
correct: c
correct: c
correct: d
correct: b
Title: Which of the following explains interaction in a multiple regression model? a.Interaction ...
Post by: djutopia on Mar 3, 2018
:-] I'm impressed