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

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

    predict(tfit,type="response")

[Package survival version 2.26 Index]