tobin {survival}R Documentation

Tobin's Tobit data

Description

Economists fit a parametric censored data model called the `tobit'. These data are from Tobin's original paper.

Usage

data(tobin)

Format

A data frame with 20 observations on the following 3 variables.

durable
Durable goods purchase
age
Age in years
quant
Liquidity ratio (x 1000)

Source

J. Tobin, Estimation of relationships for limited dependent variables, Econometrica, v26, 24-36, 1958.

Examples

data(tobin)
tfit <- survreg(Surv(durable, durable>0, type='left') ~age + quant,
                data=tobin, dist='gaussian')

predict(tfit,type="response")


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