Solution Manual For An IBM SPSS Companion to Political Analysis, 6th Edition

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Solution Manual toChapter Exercises inAn IBM SPSSCompanion to Political Analysis,SixthEditionByPhilip H.PollockIIandBarry C.EdwardsSolutions to Exercises inPageGettingStarted (No exercises)2Chapter 1:Introduction toSPSS3Chapter 2: Descriptive Statistics6Chapter 3: Transforming Variables20Chapter 4: Making Comparisons24Chapter 5: Making Controlled Comparisons37Chapter 6:Making Inferences about Sample Means48Chapter 7: Chi-Square and Measures of Association51Chapter 8: Correlation and Linear Regression57Chapter 9:Dummy Variables and Interaction Effects66Chapter 10: Logistic Regression74Chapter 11: Doing Your Own Political Analysis83Version 1.3, Last UpdatedMay 8, 2019

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition3Chapter 1:Introduction toSPSS1.A.26$170,000 or overB.0Never2.Display namesAlphabetical3.A.General HappinessB.14.A.General HappinessFrequencyPercentageValidpercentageCumulativepercentageValidVERY HAPPY86930.330.430.4PRETTY HAPPY157955.155.285.6NOT TOO HAPPY41114.314.4100.0Total285999.7100.0MissingSystem8.3Total2867100.0

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition4B.Word-formatted table looks something like this:General HappinessFrequencyPercentageCumulativeVery Happy86930.430.4Pretty Happy157955.285.6Not Too Happy41114.4100.0Total2859100.0Syntaxforsolution*withGSSdatasetFREQUENCIESVARIABLES=happy/ORDER=ANALYSIS.5.SPSSfile typeFilename extensionDataset.savOutput.spvSyntax.sps6.A.hs_yrs_ssB.vep16_turnoutC.attend_pctD.volunteer_percent

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition57.NESvariable“marital”Numeric codeValue label1Married, spouse present2Married, spouse absent (volunteered)3Widowed4Divorced5Separated6Never married8.Here are the variable descriptions in theAppendix. Students were asked to describe thesevariables in “their own words” so their wording should vary without changing the essentialmeaning.A.Total fertility rate: Number children born per woman (CIA)B.Percentage of population aged 15–49with HIV. From World Economic ForumC.Number infants dying before age one per 1,000 live births. From World Bank’s WorldDevelopment IndicatorsD.Public expenditure on health as a percentage of GDP (UN)E.Age-standardized death rates from non-communicable diseases per 100,000 people (UN)

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition6Chapter 2: Descriptive Statistics1.A.science_quizscoreFrequency*PercentageCumulativepercentage02.4.4192.02.42132.95.33388.213.445411.625.156614.239.268017.156.377816.873.186012.986.09459.695.610214.4100.0Total465100.0B. The science_quiz variablehas a mean equal to6.03, a median equal to6, and a skewnessequal to–0.23.C.

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition7D. Either answer is correct. The mean (6.03) and median (6) are almost the same so eithermeasure of central tendency will work.E. The median is a good measure of central tendency in this case between the observations arenegatively skewed. The mean is attractive because the science quiz is an interval level variable.F.About 60%of people gotpassing grades on science_quiz.About 15%got an A on the science quiz.Syntaxforsolution*withGSSdatasetFREQUENCIESVARIABLES=science_quiz/STATISTICS=MEANMEDIANSKEWNESSSESKEW/BARCHARTFREQ/ORDER=ANALYSIS.2.A.Statistics for women13variable

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition8Mean21.10Median20.8Skewness0.48B.No.17.8%women in the legislature is below average for a democracy. According to thesummary statistics, the world mean is 21.10%and world median is 20.8%.C. To reach the top 10% of countries in the world, women would need to constituteabout 40%ofthe US House of Representatives.D.E.The five countries with thelowestpercentagesof women legislators are1.Papua New Guinea2.Comoros3.Sri Lanka4.Nigeria5.JapanThe five countries with thehighest percentagesof women legislators are1.Sweden2.Senegal

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition93.Finland4.Nicaragua5.IcelandSyntaxforsolution*withworlddatasetFREQUENCIESVARIABLES=women13/FORMAT=NOTABLE/STATISTICS=MEANMEDIANSKEWNESSSESKEW/HISTOGRAM/ORDER=ANALYSIS.SUMMARIZE/TABLES=countryBYwomen13/FORMAT=VALIDLISTNOCASENUMTOTAL/TITLE='CaseSummaries'/MISSING=VARIABLE/CELLS=COUNT.3.A.If Pundit 1 is correct, femrole will havea negative skew.If Pundit 2 is correct, femrole will havea positive skew.If Pundit 1 is correct, femrole’s mean will belower than its median.If Pundit 2 is correct, femrole’s mean will behigher than its median.B.Statistics for femrolevariableMean5.87Median6Mode6Skewness–0.29C.The choice of bar color is arbitrary.

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition10D.Pundit 1’sassessment is more accurate. The distribution of femrole values is negativelyskewed and the median is higher than the mean. The bar graph shows values tailing off on theleft side.(Wording may vary.)Syntaxforsolution*withGSSdatasetFREQUENCIESVARIABLES=femrole/FORMAT=NOTABLE/STATISTICS=MEANMEDIANSKEWNESSSESKEW/BARCHARTFREQ/ORDER=ANALYSIS.4.A.Maximum dispersion when percentage of observations in each category the same.Figureshould something like this:

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition11B.No dispersion when all observations in the same category. (It doesn’t matter which categoryso long as observations all in the same one.)C.

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition12Attend valueFrequency*PercentageCumulativepercentageNever71125.025.0<Once/yr1685.930.8Once/yr37813.344.1Sev times/yr31611.155.2Once/mo1987.062.22–3 times/mo2498.770.9Nrly evry wk1274.475.4Every wk49817.592.8>Once/wk2047.2100.0Total2849100.00%* Weighted frequenciesD.

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition13E.The mode of attend isNever.The median of attend isSev times/yr.F.High dispersion. Although there are not the same number of respondents in eachcategory,there observations are spread out among the categories.(Instructions do not call for explanation.)Syntaxforsolution*withGSSdatasetFREQUENCIESVARIABLES=attend/FORMAT=NOTABLE/STATISTICS=MEDIANMODE/BARCHARTPERCENT/ORDER=ANALYSIS.5.

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition14A.Send back children broughtto USillegally?Percentage1.Should send back–favor a great deal7.7%2. Should send back–favor a moderateamount8.5%3. Should send back–favor a little2.7%4. Should allow to stay–favor a little9.9%5. Should allow to stay–favor a moderate amount33.9%6.Should allow to stay–favor a great37.3%Total100.0%Should marijuana belegal?PercentageFavor45.3%Neither favor noroppose25.8%Oppose28.9%Total100.0%Presidential approval scalePercentageApproveStrongly36.0%Approve17.2%Disapprove9.7%DisapproveStrongly37.1%Total100.0%B.Sending back children brought to US illegally. 71.2% ofpeople moderately or strongly favorletting children brought to US illegally stay in the country.(Wording may vary.)C.Legalization of marijuana. Opinions are spread out among the values favor, neutral, opposewith no response constituting a majority.(Wording may vary.)D.Presidential approval. Most respondents either strongly approve the job the president is doingor strongly disapprove the job he is doing. (Note: this NES wave was conducted in 2016 so thisquestion is about Barack Obama, not Donald Trump.)(Wording may vary.)E.

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition15Syntaxforsolution*withGSSdatasetFREQUENCIESVARIABLES=immig_chldrngrasspres_job/ORDER=ANALYSIS.GRAPH/BAR(SIMPLE)=PCTBYpres_job.6.A.U.S. CongressMyHouse incumbentApproveStrongly7.2%25.4%Approve18.0%44.9%Disapprove20.2%18.4%DisapproveStrongly54.6%11.3%Total100.0%100.0%

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Solution Manual to Chapter Exercises, SPSS Companion, Sixth Edition16B.Incorrect. The distribution of opinions about House incumbents is not similar to thedistribution of opinions about thewhole Congress. The majority of people strongly disapproveof Congress as a whole, but the majority either approve or strongly approve of their Houseincumbent. (Wording may vary.)Syntaxforsolution*withNESdatasetFREQUENCIESVARIABLES=cong_approvecong_incumb_approve/ORDER=ANALYSIS.7.A.If the conventional wisdom is correct, the distribution of defense-related expenditures willhaveapositiveskew. If the conventional wisdom is correct, the mean of defense-relatedexpenditures will behigher than its median.B.Statistics fordefexpenvariableMean1093.74Median931.5Skewness2.29C.Themedianis more representative of how much a typical state receives.Defense expendituresper state are skewed because a few states receive a lot of expenditures.D.

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