Sampling Theory & Sample Mean
8 important questions on Sampling Theory & Sample Mean
What are the key properties of Xˉ\bar{X} ?
What is the Central Limit Theorem (CLT)?
What is the Standard Error of the Mean (SE)?
It measures how much the sample mean is expected to vary from sample to sample.
Smaller SE → more precise estimate of μ\mu μ.
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What happens when sample size increases?
What is the difference between σ and s in formulas?
What is the expected value of the sample mean?
What is the variance of the sample mean?
What is the standard deviation of the sample mean?
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