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Count up the number of obseravtions made on the experimental units. That is the sample size.
If the population is of size N, then you allocate the numbers 1 to N to them: one per element of the population. Then generate random numbers in the range 1 - N. The element whose number is thrown up by the generator is in the sample. In the unlikely event that a number is repeated, you ignore the repeat and continue drawing the sample until you have the required correct number in the sample.
Business can randomly sample a group of people in the populations. They can also call for volunteers such as setting up a focus group.
A questionnaire has little to do with sampling technique. Sampling technique is to do with who gets the questionnaire and that can be any sampling technique: the questionnaire can be sent to everyone (census), to a random sample, stratified random samples, to random samples in clusters, by quota or convenience. Or a pile of questionnaires can be left for respondents to pick up - self-selection.
One
easy to contact.
An other word for opportunity sample is a convenience sample. Normally, you would sample subject through a process of randomisation. A convenience sample is made up by people that are easy to come by. Often these samples contain freshman students, because they can be obligated to participate in a certain number of studies.
Count up the number of obseravtions made on the experimental units. That is the sample size.
The mouthwash? Sure, you'd pick it up in a convenience store.
yes, people are made of matter. people have mass because we take up space.
a community is made up of the specific population
It was mostly made up of Greek people...
7 people had made it up, who had been confederate soilders.
Roman society was divided into the patricians (the aristocracy), the equites (equestrians) who were bankers, money lenders, merchants and investors in shipping and mining, and the plebeians (the commoners). there were also slaves and freedmen
Convenience, and it usually takes only 2 people to carry.
Generally speaking no. Humans contribute to global warming by burning fossil fuels. The disaster, if we can call it that, is that some people prefer short term profit and convenience rather than facing up to the need for solutions.
George Washington made up the cabinet when he was president.