What is sample size calculation and why is it important?
An example of an AI chatbot conversation about sample size calculation in research.
What is sample size calculation and why is it important?
Sample size calculation determines the number of participants needed for a study to ensure valid results. It's crucial for statistical power.
How do I calculate the sample size for my study?
You can use formulas based on the expected effect size, population variance, and desired power level. Would you like a specific example?
Yes, please provide an example with numbers.
Sure! If you expect a medium effect size (0.5), want 80% power, and have a significance level of 0.05, you would need about 64 participants per group.
What factors can affect the sample size needed?
Factors include the expected effect size, population variability, desired confidence level, and the study design.
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