MANAGEMENT

Detailed explanation-1: -Reliability * exists when a research technique produces nearly identical results in repeated trials. It requires that the questions ask for the same type of information from all respondents.

Detailed explanation-2: -Qualitative research uses several techniques including interviews, focus groups, and observation. [1][2][3] Interviews may be unstructured, with open-ended questions on a topic and the interviewer adapts to the responses.

Detailed explanation-3: -A primary data source is an original data source, that is, one in which the data are collected firsthand by the researcher for a specific research purpose or project.

Detailed explanation-4: -In probability sampling, the units are selected randomly while in quota sampling a non-random method is used-it is usually left up to the interviewer to decide who is sampled.

Detailed explanation-5: -In other words, secondary data refers to data that have already been collected for some other purpose.