need help in selecting models about moderation variable

[saira]

helooooooooooo can any body answer my question plzzzzzzz.

ok i am working on my thesis. my topic is impact of competition on Coporate Social Responsibility, moderating effect of ownership types.

competiotion ia m going to measure through Herfindhal index HHI, it must be industry competition value . than i used to measure the CSR. ok i got these two values now the moderation variable. public and private how to measure the moderation effect if it is catagorical data