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| 1. |
Distinguish between random sampling and systemetic sampling. Give suitable examples. |
| Answer» Solution :Under SIMPLE random sampling, a sample of items is chosen randomly from a population, and each item has an equal probability of being chosen. Simple random sampling uses a table of random numbers or an electronic random number generator to SELECT items for its sample. Systematic sampling involves selecting items from an ORDERED population USING a skip or sampling interval. The use of systematic sampling is more appropriate compared to simple random sampling when a project's budget is tight and requires simplicity in execution and understanding the results of a STUDY. Systematic sampling is better than random sampling when data does not exhibit patterns and there is a low risk of data manipulation by a researcher. | |