Which of the following major problem exist with non respondents in survey research?
1). They tend to be alike in many ways.
2). Data cannot be analyzed for only part of a sample.
3). They cannot be found to determine if they are similar to respondents.
4). They may have different opinions than respondents.
2. the research problem available in the field of philosophy are called as
3. The use of several measures of a construct is called
5. A research problem is visible only when
6. In a grouped frequency distribution, the intervals should be what?
7. The popular form of the Project method is
8. A salient feature of randomization is