Polio cases in USA from Jan 1970 till Dec 1983

Description

The data set contains the monthly number of cases of poliomyelitis in the United States between 1970 and 1983.

Usage

data(polio)

Format

The dataset consists of one variable of 168 monthly observations.

polio

a numeric vector

Source

Zeger, S. A Regression Model for Time Series of Counts. Biometrica, Vol. 75, No 4 (Dec., 1988), pp. 621-629

Examples

data(polio)