# 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 +1VarimaxFavorite -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

Favorite -1 Varimax / Favorite Varimax / Favorite +1VarimaxFavorite -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).