Because without representative sample, your results will not be valid.
A sample that accurately reflects the characteristics of the population as a whole
Take a simple random sample.
A representative sample is one where the statistics of the sample are the same as the statistics for the parent population.
It is important for a sample to be representative, so that the whole population's view is counted, and not biased by one particular group within the population.
Many statistical statements for a population which are based on a sample are not valid if the sample is not representative.
A representative sample is a randomly selected subset of the population.
Because without representative sample, your results will not be valid.
A simple random sample.
A sample is any subset of the total population. A representative sample is one that is chosen so that its characteristics are similar to that of the population.
It is called a representative sample.
A sample that accurately reflects the characteristics of the population as a whole
That the key characteristics of the population are reflected in the sample.
Take a simple random sample.
A representative sample is one where the statistics of the sample are the same as the statistics for the parent population.
.representative
(adjective) The sample is representative of the specimens we gathered. (noun) We will send a representative to the student council meeting.