File	Title	Manuscript Id
Chapter 1. Explanatory and response variables	stat_tutor_html5_ch_4_explanatory_and_response_variables.html	58efd03e7894d2cc68000031
DLAP questions	stat_tutor_html5_ch_4_explanatory_and_response_variables_dlap.xml	58efd03e7894d2cc68000031