Sampling Designggggfgggfggggg (1) (1).pptx

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1. SAMPLE DESIGN Steps in Sampling Design

2. Sample 🞂 ​ The sample should be representative of the population Sample Population or Universe

3. SAMPLE DESIGN 🞂 ​ A sample design is a definite plan for obtaining a sample from a given population. 🞂 ​ It refers to the technique or the procedure the researcher would adopt in selecting items for sample. 🞂 ​ It is an important part of a research design or plan.

4. Steps in Sampling Design rse Define the population or unive State the sampling frame Identify the sampling unit State sampling method Determine the sample size Spell out the sampling plan Select the sample

5. Define the population or Universe 🞂 ​ It is the first step in developing any sample design. 🞂 ​ The set of objects technically called universe is clearly defined. 🞂 ​ The universe can be finite or infinite. 🞂 ​ In finite universe the number of items is limited. 🞂 ​ In the case of infinite universe the number of items is infinite. That means we can't measure the number of units. E.g. number of stars in the sky.

6. State the sampling frame 🞂 ​ After defining the population the sampling frame is to be stated. 🞂 ​ It is the source list from samples is to draw. 🞂 ​ It contains the names of all items of the universe. 🞂 ​ It is the means of representing the elements of the population. E.g. telephone book, directory etc.

7. Identify the sampling unit 🞂 ​ A decision related to sampling unit is to be taken before selecting sample for study. 🞂 ​ Sampling unit (e.g. state, village etc) may be geographical one or a social unit (e.g. a school or club). 🞂 ​ The researcher should select one or more of the sampling unit.

8. State sampling method 🞂 ​ There are number of methods used for selecting samples. 🞂 ​ It includes probability sampling methods, non- probability sampling methods. 🞂 ​ Out of this the researcher should select one method by which sampling units are to be selected.

9. Determine the sample size 🞂 ​ This refers to the number of items to be selected from the universe. 🞂 ​ The sample size should not be large or small. It should be optimum.

10. Spell out the sampling plan 🞂 ​ In this stage the researcher should state the operational procedures for selection of the sample. 🞂 ​ That means he should decide the techniques, which are used in selecting the item of sample. In fact it is the sample design.

11. Select the sample 🞂 ​ It is the last step.The needed samples are to be selected. 🞂 ​ The office and fieldwork is required to carry out the selection of the sample.

12. Features of a Good Sample Design 🞂 ​ The outcome of a good Sample design must be a truly representative sample. 🞂 ​ The selected sample design should not cause more errors. 🞂 ​ Sample design should be viable on the basis of budget constraints. 🞂 ​ A good sample design is able to control systematic bias effectively.