@moaaz said in STA631 GDB 1 Solution and Discussion: Part b): What are the types of sampling design? Explain each type. Types of sampling design in Research Methodology There are different types of sample designs based on two factors viz., the representation basis and the element selection technique. On the representation basis, the sample may be probability sampling or it may be non-probability sampling. Probability sampling is based on the concept of random selection, whereas non-probability sampling is ‘non-random’ sampling. On element selection basis, the sample may be either unrestricted or restricted. When each sample element is drawn individually from the population at large, then the sample so drawn is known as ‘unrestricted sample’, whereas all other forms of sampling are covered under the term ‘restricted sampling’. The following chart exhibits the sample designs as explained above. Thus, sample designs are basically of two types viz., Non-probability sampling Probability sampling. We take up these two designs separately. CHART SHOWING BASIC SAMPLING DESIGNS Reff

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