con_check               Check connectedness of multiple factors in a
                        dataframe
con_concur              View concurrence of two factors in a dataframe
                        using a matrix plot.
con_filter              Filter a dataframe using two-way criteria to
                        increase connectedness
con_view                View connectedness of two factors in a
                        dataframe using a levelplot
data_eccleston          Data from Eccleston & Russell
data_fernando           Data from Fernando et al.
data_searle             Data from Searle
data_student            Simulated Data of Student Test Scores
data_tosh               Data from Tosh
data_weeks1             Data from Weeks & Williams example 1
data_weeks2             Data from Weeks & Williams example 2
