Question

Describe the methods of investigation with their merits and demerits

Answer 1

According to this method, investigator organises personal contact with those from whom the information is to be obtained.The investigator personally collects the information, the data are original and accurate.

Answer 2

Answer:

The primary objectives of collecting and analyzing a sample investigation are to reveal characteristics of a population as follows:

Estimating the parameters of the population like means, median, mode, etc.

Testing validity statements about the population

Investigating the changes in population over time

In other words, the sampling process involves three main elements – selecting the sample, collecting the information, and also making inferences about the population.

Explanation:

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