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What is a good sample size for 500?

What is a good sample size for 500?

Professional researchers typically set a sample size level of about 500 to optimally estimate a single population parameter (e.g., the proportion of likely voters who will vote for a particular candidate). This will construct a 95\% confidence interval with a Margin of Error of about ±4.4\% (for large populations).

Why is 400 a good sample size?

A sample size of 400 questionnaires keeps the cost of the research down while still allowing us to have high confidence in the results. Using the margin of error ± 5\% and 95\% confidence level, the sample size suggested is 385.

What is a good sample size for a population of 300?

How different are the sample sizes from small population vs large populations?

Population Size Required Sample Size
5000 880
1000 517
500 341
300 235
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What is the sample size of 200 population?

Determining Sample Size

Population Sample Population
170 118 30 000
180 123 40 000
190 127 50 000
200 132 75 000

What is the sample size for 100 population?

Suggested Sample Sizes

Population Size Sample Size per Margin of Error
1,000 525 90
3,000 810 100
5,000 910 100
10,000 1,000 100

What is a reasonable sample size?

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.

What is a large enough sample size?

A general rule of thumb for the Large Enough Sample Condition is that n≥30, where n is your sample size. You have a moderately skewed distribution, that’s unimodal without outliers; If your sample size is between 16 and 40, it’s “large enough.” Your sample size is >40, as long as you do not have outliers.

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Is 200 a good sample size?

As a general rule, sample sizes of 200 to 300 respondents provide an acceptable margin of error and fall before the point of diminishing returns.

What is a good sample size out of 100?

A good maximum sample size is usually around 10\% of the population, as long as this does not exceed 1000.

What is a statistically good sample size?

What sample size is needed to give a margin of error of 5\% with a 95\% confidence interval?

about 1,000
For a 95 percent level of confidence, the sample size would be about 1,000.