POLS 210

Exam 4 review sheet

 

This review is intended to give you a general idea of what may appear on the exam from the lectures listed below. The exam will cover material from the assigned readings and material that was presented in the lecture.

 

1. Coding

2. Frequency table

3. Percentages and proportions

4. Measures of Association

††††††††††† A. Cross-tabulation

††††††††††††††††††††††† Hypotheses

††††††††††††††††††††††††††††††††††† Directional, Null

††††††††††††††††††††† Dependent/independent variables

††††††††††††††††††††††† Know how to produce a cross-tabulation

††††††††††††††††††††††† Know how to read a cross-tabulation (both bivariate and multivariate)†††††

††††††††††††††††††††††† Know how to control for a third variable (Nominal and ordinal variables only)

††††††††††† B. Tests of statistical significance and measures of association (Handout)

††††††††††††††††††††††† Dependent/independent variables

††††††††††††††††††††††† Levels of Measurement

††††††††††††††††††††††† Statistical significance

††††††††††††††††††††††† Strength of association

††††††††††††††††††††††† Direction of association

††††††††††††††††††††††† Substantive interpretation

††††††††††††††††††††††† Bivariate association

††††††††††††††††††††††† ††††††††††† Lambda, Cramerís V, Somersí d, Pearsonís r

††††††††††††††††††††††† Calculation of Lambda

††††††††††† C. Controlling for a third variable (Nominal and ordinal variables only)

††††††††††††††††††††††††††††††††††† Lambda, Cramerís V, Somersí d

††††††††††† D. Regression Analysis (Bivariate and Multivariate)

††††††††††††††††††††††† Hypothesis

††††††††††††††††††††††††††††††††††† Null, Directional

††††††††††††††††††††††† Dependent/independent variables

††††††††††††††††††††††† Scatterplot (X/horizontal axis, Y/vertical axis)

††††††††††††††††††††††††††††††††††† Slope coefficient, constant, regression line, residual, outlier

††††††††††††††††††††††† Interpretation of adjusted R-squared

††††††††††††††††††††††† Predicted value (Bonus points: 3 points)

5. Phases 4-5

6. SPSS

                        Crosstab,

                        Test of statistical significance (Chisquare test)

                        Measures of association (Lambda, Cramer's V, Somer's d, Pearson's correlation)

                        Regression

7. Interpretation of regression results table (Bonus points: 3 points)

e.g.

Table 1:  The Impact of GDP Per Capita on Turnout

Variables

Unstandardized coefficients

GDP per cap ($1000)

.334

(.430)

Gini coefficient

-.573**

(.214)

Compulsory voting

9.451*

(4.538)

Constant

82.323

(10.321)

Adj R2

.092

N

76

Note: Standard errors are in parentheses. **: p<.01, *: p<.05

 

12. The following information will be provided.

††††††††††† Chi square:

 

 

††††††††

†††††††††††

DF=(c-1)(r-1)

 

 

Chi Square Table

 

Probability

df

.95

.90

.10

.05

.01

1

.00393

.0158

2.706

3.841

6.635

5

1.145

1.610

9.238

11.070

15.086

10

3.940

4.865

15.987

18.307

23.209

15

7.261

8.547

22.307

24.996

30.578

 

Measures of Association:

Measurement Types

 

Statistics

One nominal one ordinal variables

Cramerís V

Two ordinal variables

Somersí d

Two I/R variables

Pearsonís corr. Coeffor