Data from Weeks & Williams example 1

Usage

data_weeks1

Format

An object of class data.frame with 16 rows and 3 columns.

Source

Weeks, David L. & Donald R. Williams (1964). A Note on the Determination of Connectedness in an N-Way Cross Classification. Technometrics, 6:3, 319-324. Table 1. http://dx.doi.org/10.1080/00401706.1964.10490188

Details

A dataframe with 3 treatment factors. The treatment combinations are connected.

Note: This data is based on Table 1 of Weeks & Williams. Table 2 is missing treatment combination (1,2,4).

Examples

library(lfe)
cbind(data_weeks1,
      .group=con_check(data_weeks1, ~ f1+f2+f3))
#>    f1 f2 f3 .group
#> 1   1  1  2      1
#> 2   1  1  3      1
#> 3   1  1  4      1
#> 4   1  2  1      1
#> 5   1  2  2      1
#> 6   1  2  4      1
#> 7   1  3  1      1
#> 8   1  3  2      1
#> 9   1  3  4      1
#> 10  2  1  2      1
#> 11  2  1  4      1
#> 12  2  2  1      1
#> 13  2  2  3      1
#> 14  2  2  4      1
#> 15  2  3  1      1
#> 16  2  3  4      1