ftemp: Femal Temperature Data

In lmtest: Testing Linear Regression Models

Femal Temperature Data

Description

Daily morning temperature of adult female (in degrees Celsius).

Usage

data(ftemp)

Format

Univariate daily time series of 60 observations starting from 1990-07-11.

Details

The data gives the daily morning temperature of an adult woman measured in degrees Celsius at about 6.30am each morning.

At the start of the period the woman was sick, hence the high temperature. Then the usual monthly cycle can be seen. On the second cycle, the temperature doesn't complete the downward part of the pattern due to a conception.

Source

The data set was taken from the Time Series Data Library, maintained by Rob Hyndman.

Examples

data(ftemp)
plot(ftemp)
y <- window(ftemp, start = 8, end = 60)
if(require(strucchange)) {
  bp <- breakpoints(y ~ 1)
  plot(bp)
  fm.seg <- lm(y ~ 0 + breakfactor(bp))
  plot(y)
  lines(8:60, fitted(fm.seg), col = 4)
  lines(confint(bp))
}

lmtest documentation built on March 22, 2022, 1:06 a.m.