Question: Which Of The Following Is A Good Example Of A Representative Sample?

What is representative sampling?

“Representative sampling” is a type of statistical sampling that allows us to use data from a sample to make conclusions that are representative for the population from which the sample is taken..

How do you know if a sample is representative?

A representative sample should be an unbiased reflection of what the population is like. There are many ways to evaluate representativeness—gender, age, socioeconomic status, profession, education, chronic illness, even personality or pet ownership.

Which gives the best definition of a representative sample?

Answer Expert Verified The best definition of a representative sample is a sample that has the same general characteristics of the target population. In polls or surveys, researches use representative samples because it is very difficult to apply the surveys or polls to an entire population.

What is biased sample?

Sampling bias occurs when some members of a population are systematically more likely to be selected in a sample than others. It is also called ascertainment bias in medical fields. Sampling bias limits the generalizability of findings because it is a threat to external validity, specifically population validity.

What is considered as the best sample?

Thus, for simple random sampling and stratified sampling, the sample size might be only 36 students. … Cluster sampling provides the most precision (i.e., the smallest standard error); so cluster sampling is the best method.

What do you mean by Representative?

1 : serving to represent. 2a : standing or acting for another especially through delegated authority. b : of, based on, or constituting a government in which the many are represented by persons chosen from among them usually by election. 3 : serving as a typical or characteristic example a representative moviegoer.

What is an example of a simple random sample?

A simple random sample is a subset of a statistical population in which each member of the subset has an equal probability of being chosen. … An example of a simple random sample would be the names of 25 employees being chosen out of a hat from a company of 250 employees.

Is the method of getting samples?

Methods of sampling from a populationSimple random sampling. In this case each individual is chosen entirely by chance and each member of the population has an equal chance, or probability, of being selected. … Systematic sampling. … Stratified sampling. … Clustered sampling. … Convenience sampling. … Quota sampling. … Judgement (or Purposive) Sampling. … Snowball sampling.

Is the number of individuals in a sample?

A sample is the specific group that you will collect data from. The size of the sample is always less than the total size of the population. In research, a population doesn’t always refer to people.

How do you collect a representative sample?

If we will use probability sampling to obtain a representative sample, then simple random sampling is the best choice. The sample choice is made at random, which guarantees that each member of the population will have the same probability of selection and inclusion in the sample group.

What are the characteristics of a good sample?

Characteristics of a Good Sample(1) Goal-oriented: A sample design should be goal oriented. … (2) Accurate representative of the universe: A sample should be an accurate representative of the universe from which it is taken. … (3) Proportional: A sample should be proportional. … (4) Random selection: A sample should be selected at random.More items…•Mar 4, 2019

What is a non representative sample?

Non-Representative Samples. -not intended to generalize. -typical of experimental design and qualitative research.

Is a sample random?

Definition: Random sampling is a part of the sampling technique in which each sample has an equal probability of being chosen. A sample chosen randomly is meant to be an unbiased representation of the total population.

What are the different kinds of sampling?

There are five types of sampling: Random, Systematic, Convenience, Cluster, and Stratified.

Are student samples representative?

Most psychological studies rely on student samples. Students are usually considered as more homogenous than representative samples both within and across countries. … Two often used cultural variables, embeddedness and intellectual autonomy, failed to explain the differences between both groups across countries.

What is an example of a representative sample?

A representative sample is a subset of a population that seeks to accurately reflect the characteristics of the larger group. For example, a classroom of 30 students with 15 males and 15 females could generate a representative sample that might include six students: three males and three females.

What is a representative sample in psychology?

A representative sample is a group that closely matches the characteristics of its population as a whole. In other words, the sample is a fairly accurate reflection of the population from which the sample is drawn.

What is the importance of having a representative sample?

Representative samples are important as they ensure that all relevant types of people are included in your sample and that the right mix of people are interviewed. If your sample isn’t representative it will be subject to bias.

What is a good representative sample size?

around 10%A good maximum sample size is usually 10% as long as it does not exceed 1000. A good maximum sample size is usually around 10% of the population, as long as this does not exceed 1000. For example, in a population of 5000, 10% would be 500. In a population of 200,000, 10% would be 20,000.

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