girder_experiment {ggDoE}

Girder experiment

Description

An experiment (Narayanan and Adorisio, 1983) to compare four methods for predicting the shear strength for steel plate girders. Data for nine girders in the form of the ratio of predicted to observed load for these procedures are given. Each of the four methods was used to predict the strength of each of the nine girders.

Usage

girder_experiment

Format

A tibble with 36 rows and 3 variables

girders

A factor denoting one of the nine girders

method

A factor denoting one of the four methods for predicting the shear strength for steel plate girders: Aarau, Karlsruhe,Lehigh, Cardiff

response

The shear strength for steel plate girders

Source

Wu, CF Jeff, and Michael S. Hamada. Experiments: planning, analysis, and optimization. John Wiley & Sons, 2011

Examples

lm(response ~ method + girders, data = girder_experiment) |>
anova()