Can the IV in an ANCOVA be continuous?

#1
While controlling for a few categorical and continuous variables. All I care about is the effect of the IV, whether it is significant or not.

Thanks for the responses, in advance.
 

Karabiner

TS Contributor
#3
The ANCOVA is equivalent to a multple linear regression.
In such a regression, you can include categorical and continuous
variables (and their interactions, if necessary). Likewise, in
ANCOVA you can include both types of variables as predictors.

The dependent variable in ANCOVA or in linear regression must
be interval scaled. If it is not, then ordinal logistic regression or
binary logistic regression or multinomial logistic regression
could be considered.

With kind regards

Karabiner