Exercise

EFA: How many factors?

A survey can load to any number of factors, so long as there is more than one item loaded to each factor. It appears from the scree plot that brand_rep_9 reflects three latent factors, but let's check with one more and one fewer factor just to be safe. The three-factor model has been stored as brand_rep_9_EFA_3, and psych has been loaded to your environment along with the brand_rep_9 dataset.

Instructions

100 XP

Print a summary() of brand_rep_9_EFA_3.
Build and print the loadings for a two-factor EFA of brand_rep_9 using the fa() function from psych. Assign this output to the object brand_rep_9_EFA_2.
Do the same for a four-factor model. Assign the output to brand_rep_9_EFA_4.