POLS 210

Exam 3 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.

 

I. Test of Statistical Significance and Measures of Association

††††††††††† A. Cross-tabulation

††††††††††††††††††††††† Hypotheses

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

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

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

††††††††††††††††††††††† Know how to interpret 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

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

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

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

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

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

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

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

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

 

††††††††††† C. Chi square test

††††††††††††††††††††††† The following information will be provided

 

††††††††††††††††††††††† Chi square:

†††††††††††††††††††††††††††††††††††

†††††††††††††††††††††††††††††††††††

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

  

††††††††††††††††††††††††††††††††††† Chi Square Table

 

Probability

df

.10

.05

.01

 

1

2.706

3.841

6.635

 

5

9.238

11.070

15.086

 

10

15.987

18.307

23.209

 

15

22.307

24.996

30.578

 

            D. Lambda

†††††††††††  

 

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

††††††††††††††††††††††††††††††††††† Lambda, Cramerís V, Somerís d

†††††††††††

††††††††††† F. 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

††††††††††††††††††††††† Adjusted R-squared

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

††††††††††††††††††††††††††††††††††† Y=a+bX

 

II. Phase 4a and Phase 4b

 

III. SPSS

 

IV. Reading regression results tables. (Bonus questions: 4 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

 

V. The following table will be provided online.

 

Measurement Types

 

Statistics

Two nominal variables

Lambda/

Cramerís V

Two ordinal variables

Somerís d

Two I/R variables

Pearsonís corr. Coeffor Regression

†††††††††††

IV. A within-test calculator will be provided online.