Mostly can be biased and in some cases can choose people/units innapropriate for the circumstances
There are both advantages and disadvantages of data collection methods in statistics. The main advantages are the metrics and correlation one can draw from statistics. The disadvantages stem from sampling errors.
1).There may errors (Producer's and Consumer's risk) associated with the sampling. 2).The sample does not provide 100% accurate information of the condition of the bacth.
Using sample that does not match the population
Advantages and disadvantages of probability sampling: Advantages: Since it is done at random, the whole process is unbiased. This is good to use in smaller populations, of course it doesn't 100% protect from bias (depending on the question). But this option is a quicker way of achieving information. Disadvantages: As i said before, depending on your question it cannot prevent from bias. Also, if you are sampling information from a large population this will take too much time and patience. There is also no guarantee that what these people say, represents what another group of people believe. 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. Disadvantages: This is more biased, because the individuals chosen are not at random. They also might not represent what another population thinks
advantages: reduce bias easy of sampling disadvantages: sampling error time consuming
advantage of probability sampling
There are many advantages and disadvantages of sampling. These advantages include being able to try what you need before you buy.
please help!
amdbot?!
Mostly can be biased and in some cases can choose people/units innapropriate for the circumstances
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Advantages of cluster sampling include that it's inexpensive, fast, and simple. A disadvantage is that it is known to have a high sampling error.
It is more accurate, unbiased and includes every item in the population, whereas sampling may be biased, and sampling is not totally representative.
There are both advantages and disadvantages of data collection methods in statistics. The main advantages are the metrics and correlation one can draw from statistics. The disadvantages stem from sampling errors.
disadvantages of histogram compared to barchart