10 Questions
What is the formula to calculate the required sample size?
n = Z^2 * σ^2 / E^2
In the context of estimating sample size, what does 'Z' represent?
Z-score for confidence level
For a 95% confidence level, what is the Z-score typically used?
1.96
What is the purpose of conducting a pilot study when estimating sample size?
To estimate the population standard deviation
When estimating sample size, what should be done if the sample is more than 5% of the population?
Apply Finite Population Correction (FPC) factor
In the formula n = (N-1)E^2 + Z^2σ^2 / (Z^2*N-1), what does 'N' represent?
Population size
What should you do if you end up with a fraction for the calculated sample size?
Round up to the nearest whole number
'Population Standard Deviation' is used in estimating sample size when:
'Population Standard Deviation' is unknown
What factor is applied to adjust sample size if it exceeds 5% of the population?
Finite Population Correction (FPC)
What does 'Z' represent in the context of estimating sample size?
Z-score for confidence level
Explore the fundamental concepts of randomness in statistics, including the definition of random processes, random variables, and random samples. Learn how randomness plays a crucial role in sampling and making inferences about populations.
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