MANAGEMENT

Detailed explanation-1: -15. What is it called when research agencies use a single questionnaire to collect primary data on behalf of a number of their business clients at the same time? postal survey.

Detailed explanation-2: -Research information can be gained: (a) By talking to people, either in person or on the phone. and also. (b) By using the post and getting people to fill in questionnaires and send them back to you.

Detailed explanation-3: -An example of a simple random sample would be the names of 25 employees being chosen out of a hat from a company of 250 employees. In this case, the population is all 250 employees, and the sample is random because each employee has an equal chance of being chosen.

Detailed explanation-4: -Experiments are the most popular primary data collection methods in studies with causal research design. The presence of cause cause-and-effect relationships can be confirmed only if specific causal evidence exists.