BDM W7

What is the difference between the largest and smallest value in a data set called?

• Range

• Mean

• Standard Deviation

• Variance

Which measure of dispersion is less affected by outliers?

• Standard Deviation

• Range

• Variance

• Interquartile Range

What does the Coefficient of Variation compare?

• Range and Variance

• Mean and Median

• Standard Deviation and Mean

• Interquartile Range and Mean

What is the formula for calculating the population variance?

• s = √(Σ(X - x̄)² / n)

• s² = Σ(X - x̄)² / (n - 1)

• σ² = Σ(X - μ)² / N

• σ = √(Σ(X - μ)²)

What does a z-score indicate?

• The total number of values in a data set

• The relative position of a value in a data set

• The standard deviation of a data set

• The mean of a data set

Which of the following is NOT a measure of dispersion?

• Mean

• Variance

• Standard Deviation

• Range

What is the purpose of the five-number summary?

• To find the mean of a data set

• To describe the spread of numbers in a data set

• To determine the mode of a data set

• To calculate the standard deviation

In the context of detecting outliers, what does IQR stand for?

• Interquartile Ratio

• Internal Quality Range

• Interquartile Ratio

• Interquartile Range

Which firm has a higher range of worker salaries based on the provided data?

• Firm A

• Cannot be determined

• Both have the same range

• Firm B

What is the formula for the sample standard deviation?

• s = Σ(X - x̄) / n

• s = √(Σ(X - x̄)² / n)

• s = √(Σ(X - μ)² / N)

• s = Σ(X - μ) / N