Quiz #4 Homework #6

Quiz #4 Homework #6

# factors

1. Fact1.prg  SES, locus of control, self concept, motivation, reading, writing, math, science and civics

# factors w/  > 1.00 ______

How “close” is the last with  > 1.00 ______
tempted to drop it ?

How “close” is the first with  < 1.00 ______
tempted to keep it?

Scree rule

# factors using the elbow rule ______
# factors using the elbow-1 rule ______
Which do you prefer? ______

Significance Test

X² for last significant factor _____ p ______
X² for first non-significant factor _____ p _____

% variance accounted for

Last with  > 1.00 _____
First with  < 1.00 _____
For preferred scree rule ______
For last significant factor ______
For first non-significant factor ______

What’s your “favorite” # factors? Carefully explain why.

2. Fact2.prg  i1-i40

# factors w/  > 1.00 ______

How “close” is the last with  > 1.00 ______
tempted to drop it ?

How “close” is the first with  < 1.00 ______
tempted to keep it?

Scree rule

# factors using the elbow rule ______
# factors using the elbow-1 rule ______
Which do you prefer? ______

Significance Test

X² for last significant factor _____ p ______
X² for first non-significant factor _____ p _____

% variance accounted for

Last with  > 1.00 _____
First with  < 1.00 _____
For preferred scree rule ______
For last significant factor ______
For first non-significant factor ______

What’s your “favorite” # factors? Carefully explain why.

3. Fact3.prg  sepfam findep ruls soss frss fass stanx tranx dep stress

# factors w/  > 1.00 ______

How “close” is the last with  > 1.00 ______
tempted to drop it ?

How “close” is the first with  < 1.00 ______
tempted to keep it?

Scree rule

# factors using the elbow rule ______
# factors using the elbow-1 rule ______
Which do you prefer? ______

Significance Test

X² for last significant factor _____ p ______
X² for first non-significant factor _____ p _____

% variance accounted for

Last with  > 1.00 _____
First with  < 1.00 _____
For preferred scree rule ______
For last significant factor ______
For first non-significant factor ______

What’s your “favorite” # factors? Carefully explain why.

4. Fact4.prg  age, phyab, sxabu, parsit, crimoff, suicatt, gender, runaway, meds, chem, sped, prior

# factors w/  > 1.00 ______

How “close” is the last with  > 1.00 ______
tempted to drop it ?

How “close” is the first with  < 1.00 ______
tempted to keep it?

Scree rule

# factors using the elbow rule ______
# factors using the elbow-1 rule ______
Which do you prefer? ______

Significance Test

X² for last significant factor _____ p ______
X² for first non-significant factor _____ p _____

% variance accounted for

Last with  > 1.00 _____
First with  < 1.00 _____
For preferred scree rule ______
For last significant factor ______
For first non-significant factor ______

What’s your “favorite” # factors? Carefully explain why.

Rotation & Interpertation

Select any two of the variable sets and perform a principal components analysis -- arriving at a "final solution" after considering: variimax & promax rotations of your “favorite # factors”, -1 and +1.

1. Which data set? ______

a. Insert the requested structure and intercorrelation matrics below

Favorite -1 Varimax / Favorite Varimax / Favorite +1Varimax
Favorite -1 Promax / Favorite Promax / Favorite +1 Promax
Promax factor correlations / Promax factor correlations / Promax factor correlations

b. What is your favorite solution? Carefully explain why?

c. Interpret each factor in your favorite solution (remember to label the type of factor as part of that interpretation).

2. Which data set? ______

a. Insert the requested structure and intercorrelation matrics below

b. What is your favorite solution? Carefully explain why?

c. Interpret each factor in your favorite solution (remember to label the type of factor as part of that interpretation).