Topic: Engineering

Methods: Boxplot, ANOVA,
Topics: Automotive, Consumer, Energy, Engineering, Environment,
Datafile Name: Auto Pollution Filter Noise
Abstract:

The data are from a statement by Texaco, Inc. to the Air and Water Pollution Subcommittee of the Senate Public Works Committee on June 26, 1973. Mr. John McKinley, President of Texaco, cited the Octel filter, developed by Associated Octel Company as effective in reducing pollution. However, quest...

Methods: Cluster Analysis, Three Dimensional Plot,
Topics: Automotive, Consumer, Engineering,
Datafile Name: Cars
Abstract:

Consumer Reports measured the gas mileage of 38 1978-79 model cars. Other measurements about each car, such as weight and drive ratio, were reported by the manufacturer. A cluster analysis of MPG, Weight, and Drive Ratio for cars reveals three main clusters, which we might identify ...

Methods: ANCOVA, ANOVA, Transformation,
Topics: Engineering, Health,
Datafile Name: Crash
Abstract:

Stock automobiles containing dummies in the driver and front passenger seats crashed into a wall at 35 miles per hour. National Transportation Safety Board officials collected information how the crash affected the dummies. The injury variables describe the extent of head injuries, chest decelera...

Methods: Lurking Variable, Outlier, Regression,
Topics: Consumer, Engineering, Automotive,
Datafile Name: Cars
Abstract:

In a regression to predict fuel consumption (measured in Gallons/100 miles -- see the related story "Measuring Fuel Efficiency") from the weight and drive ratio of cars, the Buick Estate Wagon shows up as an outlier. Remarkably enough, even though the Buick Estate Wagon has high fuel co...

Methods: Residuals, Transformation,
Topics: Consumer, Engineering,
Datafile Name: Cars
Abstract:

In the United States fuel efficiency for cars is typically measured in miles driven per gallon of fuel consumed (miles per gallon, MPG). This is not true in some other parts of the world where fuel efficiency is measured as the amount of fuel consumed while travelled a fixed distance (e.g. Gallon...

Methods: Regression, Dummy Variable, Interaction,
Topics: Consumer, Engineering,
Datafile Name: Nambeware Polishing Times
Abstract:

The average polishing times for 59 products are related in general to the sizes of the products as indicated by product diameter (or equivalent). However, dif- ferent types of products have special problems in polishing. For example, cas- seroles are deeper than ordinary plates and on that accoun...

Methods: Regression, Transformation, Polynomial Regression,
Topics: Automotive, Engineering, Consumer,
Datafile Name: Passenger Car Mileage
Abstract:

Variation in gasoline mileage among makes and models of automobiles is influenced substantially by the weight and horsepower of the vehicles. When miles per gallon and horsepower are transformed to logarithms, the linearity of the regression is improved. A negative second order term is required t...

Methods: Regression, Dummy Variable, Interaction, Transformation,
Topics: Consumer, Engineering,
Datafile Name: Nambeware Polishing Times
Abstract:

The relation between polishing time and product diameters as well as type of product (casserole, other) is one which is useful to the company for estimating the polishing time for new products which are designed or suggested for design and manufacture. A necessary regression assumption is that th...

Methods: Distribution, Median, Probability, Histogram,
Topics: Automotive, Engineering,
Datafile Name: U.S. Vehicle Weights, '75-'90
Abstract:

Frequency distributions are given for the weights of cars, trucks, and light duty vehicles sold in the United States in 1975 and in 1990. The class intervals are not the same through the entire listing, however. This creates problems in plot- ting frequency polygons. These will be a correct inter...

Contact Us


© 2017 Data Description, inc. All rights reserved.