Chapter 3 Statistics

Which of these statements is false?

• The mean is best used for quantitative data without outliers
• The mode is affected by outliers
• The median does not have to be a data value
• The mode is used for qualitative data

The greater the standard deviation, the more the data values are spread out. True or False?

• True
• False

What is the population standard deviation for this data set?
4, 4, 5, 7, 8, 9, 12

• 7.43
• 8.67
• 2.73
• 2.94

A ___________ visually shows a five-number summary.

• Box and whisker plot
• Pie chart
• Histogram
• Ogive

The standard deviation is the square root of the variance. True or false?

• True
• False

The second quartile (Q2) represents the mode of the data set. True or false?

• True
• False