Political Science 2101 Scope and Methods in Political Science Second Problem Set

1. Below is a crosstabulation of two variables from a survey of students in PSC 2101 from thefall of 2012: (1) student political ideology and (2) student predictions regarding whetherPresident Obama will be reelected. Calculate an appropriate measure of association for thiscrosstabulation, and interpret this statistic regarding the direction and strength of the associationbetween the two variables.2. Below is a crosstabulation of two variables: (1) student gender and (2) student attitudestoward professors banning laptops during class. Calculate the chi square for this crosstabulation,and interpret this statistic regarding the statistical significance of the association between the twovariables.3. The correlation coefficient is .591 for the following pair of variables, for which there are 435units of analysis: (1) the percent of the congressional district that is African American and (2) thepercent of the district that voted for Bill Clinton in the 1996 presidential election. Interpret thedirection, strength, and statistical significance of the association between these two variables.Note that for statistical significance, you will need to go to a table of critical values for thecorrelation coefficient, and specify whether your hypothesis test is one-tailed or two-tailed.