cluster_centroid        Centroid of a cluster
compute_global_inertia
                        Inertia of a data frame
compute_inertia_ahc     Intra group inertia for choosing the optimal
                        number of clusters in Agglomerative Clustering
create_calendar         Complete empty calendar
create_formula          Create a formula
gap_to_fill             Filling intermediate gaps in a time serie
kmeans_procedure        K-means procedure
lift_curve              Lift curve graph
lift_effect             Lift effect curve
proc_freq               SAS proc freq in R
start_end_to_fill       Function for filling start and end gaps in time
                        series
titanic_testing         Titanic testing data set
titanic_training        Titanic training data set
titanic_validation      Titanic validation data set
windows_to_linux_path   Convert windows path into linux path
world_countries_pop     World countries population from 1960 to 2018
