AP Statistics Symbols

What does μ stand for?

• Population standard deviation
• Population mean
• Sample standard deviation
• Sample mean

What does σ stand for?

• Population standard deviation
• Population mean
• Sample standard deviation
• Sample mean

What does x̄ stand for?

• Population standard deviation
• Population mean
• Sample standard deviation
• Sample mean

What does Σ stand for?

• to find the product of a data set
• to find the sum of a data set
• to find the deviations of a data set
• to find the average of a data set

What does α stand for?

• Type I Error

• Type II Error

• level of significance

• Power

Which is the symbol for sample mean?

• x̄

• μ

• n

• Σ

Which is the symbol for population mean?

• x̄

• μ

• n

• Σ

Which is the symbol for sample standard deviation?

• s²

• s

• σ

• μ

Which is the symbol for population variance?

• μ

• s²

• ΣX

• σ²

Which of the following symbols means sample variance?

• σ²
• σ
• s
• s²