Download Q. 2

Q. 1
In LISREL notation, the order of the PSI-matrix,  , is
A)
B)
C)
D)
E)
[NX x NX]
[NX x NY]
[NK x NX]
[NK x NK]
[NE x NE] correct
Q. 2
You are given the following estimates for the variables Y and X
Std(Y) = 1.1489
Std(X) = 1.1786
Corr(Y,X) = 0.3258
What is the variance of X ?
A)
B)
C)
D)
E)
0.3863
1.5010
1.1489
0.3258
1.3890 correct
Q. 3
Use the information provided in Q. 2, what is the covariance between Y and X
A)
B)
C)
D)
E)
0.4412 correct
1.5010
0.4611
0.3839
1.5673
Q. 4
In SEM, a Heywood case is associated with
A) Positive correlations between the X-variables
B) Inflated t-values on the  -coefficients
C) Small values of the  -statistic
2
D) Negative error variances (correct)
E) Correlated error variances
Q. 5
You are presented with the following two regression equations:
RY   Y   Y X   Y
RZ   Z   Z X   Z
Given the assumptions underlying the Classical assumtions, what is the
covariance between R y and RZ
A)
B)
C)
D)
E)
cov(  Y ,  Z )
Y  Z
var( Y ,  Z )
RY  Z var( Y ,  Z )
 Y  Z var( X ) correct
Q. 6
You are currently creating a Lisrel syntax for a six-indicator two-factor oblique
factor analysis model. What is the size of the parameter matrix for this model?
A)
B)
C)
D)
E)
[6
[9
[3
[6
[3
x
x
x
x
x
1]
3]
9]
2] correct
3]
Q. 7
Based on the model presented above, calculate the number of non-redundant
elements of the implied covariance matrix.
A)
B)
C)
D)
E)
18.5
21 correct
6
37
7
Q. 8
Implementing a factor model, using the Normal Theory Weighted Least Squares
(NTWLS) method of estimation in Lisrel, you observe the following lines in the
output file:
Degrees of Freedom = 87
Normal Theory Weighted Least Squares Chi-Square = 213.26 (P = 0.00)
Minimum Fit Function Value = 0.085
What is the number of observations?
Approximately
A) 100
B) 2000
C) 2510 correct
D) 1000
E) 2900