How do I analyze stratified sampling results?
An example of an AI chatbot conversation about analyzing stratified sampling results.
How do I analyze stratified sampling results?
To analyze stratified sampling results, start by calculating the mean and variance for each stratum.
What if the strata have different sample sizes?
You can use weighted averages to account for the different sample sizes when calculating overall statistics.
Can you give me an example of how to calculate a weighted average?
Sure! If Stratum A has a mean of 10 and a sample size of 20, and Stratum B has a mean of 15 with a sample size of 30, the weighted average would be (1020 + 1530) / (20 + 30).
What about confidence intervals for stratified samples?
You can calculate confidence intervals for each stratum and then combine them, considering the weights of each stratum.
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