What is the advantage of random sample?
1). It is free of errors in classification
2). It is free from bias and prejudice
3). It is simple to use
4). If the units are widely dispersed the selection of sample becomes impossible.
1. The major component of the research study is
3. A concept is a generalized idea about ........
4. Which of the following involves the studying of multiple cases in one research study?
6. Why is it important to change one variable at a time in single case designs?
7. A study in which quantitative and qualitative data are collected at the same time is a ........