Non-probability or Judgement Samples has to do with a basic researcher assumptions about the nature of the population, the researcher assumes that any sample would be representative to the population,the results of this type of samples can not be generalized to the population(cause it may not be representative as the research assumed) and the results may be biased.
Probability or Random samples is a sample that to be drawn from the population such that each element in the population has a chance to be in the selected sample the results of the random samples can be used in Statistical inference purposes
I think representative is choosing a specific group that represent, for example, your target market. Random sampling is choosing a certain number of random people
acrobat
What is the difference between 392 and 247?
the difference is also doubled
There is no difference in value between "equal" fractions: the difference is zero.
The difference between convenience and incidental sampling is that convenience sampling chooses the easiest people to reach when a sampling is done, whereas incidental sampling is done at random.
What is the difference between quota sampling and cluster sampling
tamburo
Difference between restricted sampling and unresticted sampling
Tatti meal
a
Simple!
sample is a noun and sampling is TO sample(verb)
what is the difference betwee two stage and two phase sampling
Sampling error leads to random error. Sampling bias leads to systematic error.
http://www.ma.utexas.edu/users/parker/sampling/repl.htm
Statistical sampling is an objective approach using probability to make an inference about the population. The method will determine the sample size and the selection criteria of the sample. The reliability or confidence level of this type of sampling relates to the number of times per 100 the sample will represent the larger population. Non-statistical sampling relies on judgment to determine the sampling method,the sample size,and the selection items in the sample.