What are four types of bias?

Undercoverage, Nonresponse, Voluntary Response Bias, Response Bias

There are different types of bias

1. The four types of bias are:

Propaganda

Marketing

Class

Conversely

Ethnocentrism

But because it is English I believe these are the types of bias that you're referring to:

Response Bias

Voluntary Response Bias

Nonresponse

Undercoverage