Answer:
Design bias. Design bias is one of the most frequent types of experimenter biases. It happens when researchers establish a particular hypothesis and shape their entire methodology to confirm it.
Sampling bias. Sampling or selection bias refers to choosing participants in a way that certain demographics are underrepresented or overrepresented in a study.
Procedural bias. Procedural bias arises when the way the experimenter carries out a study affects the results. ...
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