Analysis using 'lurking' variables
Variables are only called 'lurking' variables if they are either unrecorded or are unused when analysing the data. In this section's examples, we presented two analyses of the data sets:
Although the simple analysis can result in wrong conclusions, a full analysis using the 'lurking' variable is always more complex.
Do not ignore lurking variables to simplify the analysis — you could reach the wrong conclusions from the data.