What is a good sample size for 500?
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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 |
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.
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.