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Explain stratified sampling in details.
Answer
Stratified sampling is a probability sampling technique that is distinguished by two-step procedure it involves. In first step population is divided into mutually exclusive and collectively exhaustive sub-populations that are known as strata. In second step, a simple random sample of elements is chosen independently from every strata or group. This approach is used when there is considerable diversity among population elements. Major aim of this technique is to reduce cost without lose in precision.
What are the benefits of using projective techniques in comparison to focus groups and in-depth interviews? Answer Projective techniques have a major benefit over focus gro
Non Response Error: It is almost impossible to obtain data from each and every respondent covered in the same. There are always some respondents who refuse to give any information.
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explain Henry Assael Model of buying decision behavior along with the diagram”.
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