BDM #6

What is the most common measure of central tendency?

• Percentiles

• Median

• Mean

• Mode

Which measure of central tendency is affected by extreme values?

• Median

• Geometric Mean

• Mode

• Mean

What is the formula for the arithmetic mean?

• Σx/N

• Σx/n

• Σx^2/N

• Σx/n^2

What does the geometric mean measure?

• Mode of a dataset

• Median of a dataset

• Average growth factor over time

• Average of a set of numbers

What is the median of the data set {5, 6, 9, 5, 6}?

• 8

• 7

• 6

• 5

Which of the following is true about the mode?

• It is the average of the dataset.

• It is always unique.

• It is the value that appears most frequently.

• It can only be used for quantitative data.

What does skewness measure?

• The average of a dataset

• The symmetry of a distribution

• The degree of peakedness of a distribution

• The spread of data points

What is the first quartile (Q1)?

• 100th percentile

• 50th percentile

• 25th percentile

• 75th percentile

In a right-skewed distribution, which is true?

• Mean = Median = Mode

• Mean > Median > Mode

• Mean < Median < Mode

• Median < Mean < Mode

What is the formula for calculating percentiles?

• L_p = p * n

• L_p = p/n

• L_p = p/100 * (n + 1)

• L_p = (p + 1)/n