Topic: Government

Methods: Regression, Time Series, Dummy Variable,
Topics: Automotive, Government, Health,
Datafile Name: Albuquerque Batmobile
Abstract:

In April 1979 the Albuquerque Police Department began a special enforcement program aimed at reducing DWI accidents. The program consisted of a squad of police officers who manned a van which housed a Breath Alcohol Testing (BAT) device. The data collected to evaluate the program consisted of a q...

Methods: Diagnostics, Dummy Variable, Interaction, Regression,
Topics: Economics, Government, Consumer,
Datafile Name: Home Prices
Abstract:

From data maintained by the multiple listing agency in Albuquerque, the file contains prices of home resales along with descriptive data on the home, including square feet, age, number of certain features, custom built or not, and corner location or not. Another dummy variable is whether the home...

Methods: Boxplot, Correlation, Scatterplot, Smoothing,
Topics: Government,
Datafile Name: Draft Lottery
Abstract:

In 1970, Congress instituted a random selection process for the military draft. All 366 possible birth dates were placed in plastic capsules in a rotating drum and were selected one by one. The first date drawn from the drum received draft number one and eligible men born on that date were drafte...

Methods: Regression, Dummy Variable,
Topics: Economics, Government,
Datafile Name: Factors in Country Inflation
Abstract:

The authors of the publication cited as the datafile source were concerned to find factors associated with differences in historical inflation rates among countries. They developed indexes of independence of the central bank from questionnaires about policies and practices as well as from the leg...

Methods: Regression, Dummy Variable, Confidence Interval,
Topics: Government, Miscellaneous,
Datafile Name: Parking Meter Theft
Abstract:

The variable CON in the datafile Parking Meter Theft represents monthly parking meter collections by the principle contractor in New York City from May 1977 to March 1981. In addition to contractor collections, the city made collections from a number of "control" meters close to City Ha...

Methods: Regression, Outlier, Dummy Variable,
Topics: Government, Social Science, Sociology,
Datafile Name: New York City Crime
Abstract:

The datafile contains percent changes in manpower and seasonally adjusted changes in weekly auto thefts and larcenies for the 25 precincts in New York City from a base period of 27 weeks in 1966 to an experimental period of 58 weeks in late 1966 and 1967. During the experimental period police man...

Methods: Boxplot, Dotplot, Distribution, Summary Statistics,
Topics: Geography, Government,
Datafile Name: New Jersey
Abstract:

This datafile, containing the area in square miles of each county in New Jersey, may be used to illustrate basic descriptive statistics. The file contains only 21 observations, so students may even calculate means, medians, etc. by hand if desired. A boxplot or dotplot is a good graphical summary...

Methods: Outlier, Regression, Polynomial Regression, Dummy Variable,
Topics: Economics, Government,
Datafile Name: State Public Expenditures
Abstract:

In extending the regression of state and local per capita public expenditures to factors in addition to economic ability (see State Spending and Ability to Pay), metropolitanization is a relevant factor. A linear regression with the perce...

Methods: Outlier, Regression, Dummy Variable,
Topics: Economics, Government,
Datafile Name: State Public Expenditures
Abstract:

Economic ability is seen as a major determinant of varying public expenditures per capita among states in 1960. Two factors modify the simple relationship of expenditures to economic ability, however. First is the fact that Nevada has an undue influence on the overall regression. Second is the fa...

Methods: Diagnostics, Regression, Outlier, Transformation,
Topics: Economics, Government, Consumer,
Datafile Name: Home Prices
Abstract:

How taxes change in response to changing market value of homes is a question of concern to citizens as a policy matter as well as a personal financial concern. The tax data included in the datafile Home Prices permit an examination of this question for used homes in Albuquerque in 1993. The linea...

Methods: Dummy Variable, Diagnostics, Interaction, Outlier, Residuals, Transformation,
Topics: Economics, Education, Government,
Datafile Name: Teacher Pay by States
Abstract:

The scatter diagram below shows one potential influential observation, namely Alaska, which is an outlier in terms of spending per pupil. In addition, the question can be raised whether the level and slope of an appropriate regression line would be the same for the three regions of the country. S...

Methods: Regression, T-test, Time Series,
Topics: Government, Medical, Miscellaneous, Sports,
Datafile Name: Time Series
Abstract:

The datafile includes four series which can be described as time series exper- iments. At some point in the time series, new conditions are introduced. The question then is raised whether the sample of observations after the change comes from a population with a different mean than the sample of ...

Methods: Regression, Residuals, Time Series,
Topics: Government, Health,
Datafile Name: U.S. and New Mexico Highway Deaths
Abstract:

The graph below suggests that the New Mexico highway fatality rate is highly related to the U.S. fatality rate. Other aspects need to be considered, however. Among these are the lagged New Mexico rate and the lagged U.S. rate, and perhaps time itself. Whatever model is finally adopted, the residu...

Methods: Regression, Interaction, Dummy Variable,
Topics: Economics, Government,
Datafile Name: Unions and State Labor Law
Abstract:

The dummy variables for presence of state bargaining laws covering public employees and presence of state right to work laws in the datafile provide an opportunity to examine a two-predictor regression involving dummy varia- bles. In this case there is interaction between the two dummy variables ...

Methods: Dummy Variable, Regression, Scatterplot,
Topics: Government,
Datafile Name: Votes
Abstract:

The "Votes" dataset contains the percent of the popular vote that was won by the Democratic presidential candidates in the 1980 and 1984 elections. Both candidates, Jimmy Carter in 1980 and Walter Mondale in 1984, were defeated by the Republican Ronald Reagan. (In 1980 an independent ca...

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