Marital status - y/n, Years at present address(scale), Household income (in thousands)(scale), Months with service(scale),Level of education (HS, some college, college, post-undergrad), Age (years/scale),Years with current employer(scale), Retired - y/n, Wireless last month(scale), Multiple lines - y/n??, Voice mail - y/n, Paging service - y/n?, Internet - y/n, Caller ID - y/n, Call waiting - y/n, Call forwarding - y/n, 3-way calling - y/n?, Electronic billing - y/n??, Customer categories(basic service, e-service, plus service, total service), Churn within last month - y/n, Gender - m/f, # in household(scale), Toll free service - y/n, Equipment rental - y/n, Calling card service - y/n, Wireless service - y/n, Long distance last month(scale), Toll free last month(scale), Calling card last month(scale)

1. What variables can be used in a factorial anova or ANCOVA/MANCOVA?

2. Could any of these variables be used for a multiple linear regression?

3. HOw could I confirm the assumptions on the tests?