Consider the following statements.
1. Research design will help identifying the importance of each step in the whole scheme of things.
2. The design help in making the research know as to why is he studying the issue and what type of data will be needed, how data will be found.
3. A research design will always helps us in knowing successive stages.
4. Design will also help in finding out what total time the study is likely to take and what time each step in the study is likely to consume.
Which of the statement(s) given above is/are correct?