Symbols for Categorical and Quantitative Variables
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Categorical Variable: Shape for Large Sample Size (n)
Approximately normal
Quantitative Variable: Shape for Large Sample Size(n)
Normal or approximately normal.
Quantitative Variable: When is n Large?
When population is normal or n>=30
Categorical Variable: When is n Large?
nπ>=10 and n(1-π)>=10
Categorical Variable : Sample Statistic (Sample Proportion)
p̂ (sample proportion)
Quantitative Variable: Sample Statistic (Sample Mean)
x̄ (sample mean)
Quantitative Variable : Center (population mean)
μ
Categorical Variable : Center (Mean)
π