STA630 Research Methods GDB 2 Solution Fall 2012

Simple Random sampling technique is considered as the best and accurate sampling method for every kind of study. Discuss the statement on the bases of your agreement or disagreement.

Solution:

Simple random sample (SRS) is a special case of a random sample. A sample is called simple random sample if each unit of the population has an equal chance of being selected for the sample. Whenever a unit is selected for the sample, the units of the population are equally likely to be selected. It must be noted that the probability of selecting the first element is not to be compared with the probability of selecting the second unit. When the first unit is selected, all the units of the population have the equal chance of selection which is. When the second unit is selected, all the remaining  units of the population have chance of selection.
 


 
Using this method, individuals are randomly selected from a list of the population and every single individual has an equal chance of selection. This method is ideal, but if it cannot be adopted, one of the following alternatives may be chosen if any shortfall in accuracy.

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