Hormone study (Chapter 6)

Description

As part of a larger cattle study, the effect of two types of feed on the concentration of a certain hormone was investigated. Nine cows were given the feed for a period, and the hormone concentration was measured initially and at the end of the period.

Format

A data frame with 9 observations on the following 3 variables.

1. initial :a numeric vector
2. final :a numeric vector
3. difference :a numeric vector