ex1120: Was Tyrannosaurus Rex Warm-Blooded?

In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"

Description

Data are the isotopic composition of structural bone carbonate (X) and the isotopic composition of the coexisting calcite cements (Y) in 18 bone samples from a specimen of the dinosaur Tyrannosaurus rex. Evidence that the mean of Y is positively associated with X was used in an argument that the metabolic rate of this dinosaur resembled warm-blooded more than cold-blooded animals.

Usage

ex1120

Format

A data frame with 18 observations on the following 2 variables.

Carbonat

isotopic composition of bone carbonate

Calcite

isotopic composition of calcite cements

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

Barrick, R.E. and Showers, W.J. (1994). Thermophysiology of Tyrannosaurus rex: Evidence from Oxygen Isotopes, Science 265(5169): 222–224.

See Also

ex0523

Examples

str(ex1120)

Example output

'data.frame':	18 obs. of  2 variables:
 $ Carbonat: num  21.3 23.6 26.7 26.8 27 ...
 $ Calcite : num  20.5 23.2 27 28.7 27.9 ...

Sleuth2 documentation built on May 2, 2019, 7:01 a.m.