E6.10 {SenSrivastava}

Data on Perceived and Computed Travel Times by Bus

Description

The E6.10 data frame has 32 rows and 3 columns.

Usage

data(E6.10)

Format

This data frame contains the following columns:

n

a numeric vector, number of respondents, weights for the linear regression.

x

a numeric vector, computed travel times between a pair of zones in Chicago.

y

a numeric vector, perceived travel times, as reported to the U.S. Census Bureau.

Details

x where computed from bus timetables, adding an average waiting time at the stop, and an average walking time from zone center to bus stop. y is the average reported by n travelers, to the US census bureau. The variable t introduced in the example below is the one for multiple bus transfers, used in example 8.1 page 161.

Source

The data where selected by one of the authors from a larger data set compiled by Cæsar Singh from census tapes, timetables and maps.

Examples

data(E6.10)
## Manipulations of the data for example 8.1, page 161:
t <- c(0,1,rep(0,20),1,rep(0,5),1,rep(0,3))
e6.10 <- data.frame(E6.10, t=t)
rm(t)
summary(e6.10)