What is the optimal sample size for my study?
An example of an AI chatbot conversation about determining the best sample size for research.
What is the optimal sample size for my study?
The optimal sample size depends on various factors like the population size, margin of error, and confidence level. Can you provide more details about your study?
I'm conducting a survey on consumer preferences in a city with a population of 100,000.
Great! What margin of error and confidence level are you aiming for? Common choices are 5% margin of error and 95% confidence level.
I want a 5% margin of error and 95% confidence level.
Using those parameters, you would need a sample size of approximately 384 respondents to ensure your results are statistically significant.
How do I calculate that sample size?
You can use the formula: n = (Z^2 * p * (1-p)) / E^2, where Z is the Z-score, p is the estimated proportion, and E is the margin of error.
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