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.
One
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.
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, stone is a sample of matter. Matter is anything that has mass and takes up space, and stone fits this definition. It is made up of atoms and molecules that give it its physical properties.
I intend to earn a perfect score on this week's spelling test by misspelling nothing.
It was mostly made up of Greek people...
a community is made up of the specific population
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
George Washington made up the cabinet when he was president.
Yes, people are made up of matter, specifically atoms and molecules. Matter has mass, and since people are made up of matter, they have mass as well. The mass of a person is the total amount of matter contained within their body.