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Advantages of probability sampling ppt

advantages of probability sampling ppt

Statistical data on a sample may be collected through direct observation or surveys.
Thus this is an easier way for sampling.Advantages, cost Effective, as the task of assignment ogf random number to different items of population is over, the process is half done.Disadvantages: This is more biased, because the individuals chosen are not at random.Probability sampling does not involve any complex and long process.Elementswithin each sub-population are similar to one another but there areimportant differences mcgraw hill calculus and vectors 12 pdf between members of different me sub-populations may end up not being represented in thesample.Full Answer, probability sampling is useful for studying units of both similar and different samples within a group.Focusing on the features and behavior of the sample in relation to the larger group they are a part of is called statistical inference, and helps generalize the overall behavior of a group.Also, if you are sampling information from a large population this will take too much time and patience.Assignment of Random number can be done by any kind of person after a short briefing as this does not involve any lengthy, complex and crucial process.If a surveyor is appointed to survey about any data relating to family members, there is likely chances maths reference books for class 11 that s/he will develop a trend of starting to number from the eldest member to the youngest and numbers will be only increasing or decreasing only.Under probability sampling once the sample is selected theresearcher may not interfere with it sample.Supposeyou want to sample 1 of all schools in your country.Non-probability sampling: Advantages: This is more accurate because you are targeting a specific group, therefore your answers will be similar to what the rest of the population (of this group) will answer.