ex0125: Zinc concentrations for two groups of rats

In Sleuth3: Data Sets from Ramsey and Schafer's "Statistical Sleuth (3rd Ed)"

Description

The data are the zinc concentrations (in mg/ml) in the blood of rats that received a dietary supplement and rats that did not receive the supplement.

Usage

ex0125

Format

A data frame with 39 observations on the following 2 variables.

Group

a factor representing the group, with levels "A" for the dietary supplement group and "B" for the control group

Zinc

measured zinc concentration in mg/ml

Source

Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.

Examples

str(ex0125)

Example output

'data.frame':	39 obs. of  2 variables:
 $ Group: Factor w/ 2 levels "A","B": 1 1 1 1 1 1 1 1 1 1 ...
 $ Zinc : num  1.31 1.45 1.12 1.16 1.3 1.5 1.2 1.22 1.42 1.14 ...

Sleuth3 documentation built on May 2, 2019, 6:41 a.m.