20241002 - fix error

Author: Petersen

17-Test-Bias.Rmd

@@ -886,6 +886,7 @@ Adding missing data to dataframes helps make examples more realistic to real-lif
 `HolzingerSwineford1939` is a data set from the `lavaan` package [@R-lavaan] that contains mental ability test scores (`x1`–`x9`) for seventh- and eighth-grade children.
 
 ```{r}
+data("HolzingerSwineford1939")
 varNames <- names(mydataBias)
 dimensionsDf <- dim(mydataBias[,-c(1,2)])
 unlistedDf <- unlist(mydataBias[,-c(1,2)])