03-26-2015, 07:11 PM
Researcher designs a study to assess extent of alcohol abuse among college students. Advertisements of study r placed on campus and 70 students volunteer for alcoholic anonymus study. What type of bias is in this?
1.Late look bias
2.Selection bias
3. Sampling bias
4. Recall bias
5. Participation bias.
1.Late look bias
2.Selection bias
3. Sampling bias
4. Recall bias
5. Participation bias.