Chapter 2 Graphs, Charts and Tables—Describing Your Data

98) The undergraduate students at your university are classified as freshmen, sophomores, juniors, or seniors. A recent study of undergraduates asked the students to indicate the number of credits they were registered for this term. The responses were 3, 6, 9, 12, 15, and 18. The number of cells in a joint frequency distribution for the two variables, class standing, and credit hours is:

A) 4.

B) 10.

C) 24.

D) None of the above.

99) Which of the following CANNOT be shown effectively with a histogram?

A) A frequency distribution

B) A joint frequency distribution

C) A relative frequency distribution

D) The center, shape and spread of a distribution

100) Which of the following is NOT true of a bar chart?

A) It is used for numerical data.

B) The bars can be either horizontal or vertical.

C) It can show either frequency or relative frequency.

D) It is used for categorical data.

101) One characteristic of a bar chart is:

A) the bars can be displayed either vertically or horizontally.

B) there can be no gaps between the bars.

C) it is used to display the distribution of a continuous variable.

D) it shows cumulative frequency.

102) A bar chart is most likely used to display which of the following?

A) A continuous variable

B) A nominal level variable

C) An ordinal level variable

D) Either B or C

103) A study was recently conducted by the regional electric and gas company. Data were collected for three customer categories showing the dollar amount of natural gas and the dollar amount of electricity consumed during the year. Which of the following graphs would most likely be used to display both sets of data together?

A) Pie chart

B) Bar chart

C) Line chart

D) Histogram

104) One of the key differences between a bar chart and histogram is:

A) the histogram contains gaps between the bars and the bar chart does not.

B) a bar chart is used to display a categorical variable and a histogram is used to display the distribution of a quantitative variable.

C) the histogram shows relative frequency while the bar chart shows frequency.

D) the bar chart must be vertical while the histogram must be horizontal.

105) The city counsel has just voted to pass the city's budget for next year. If you were writing a report describing the budget so the citizens could understand how the total tax dollars will be spent, which of the following graphs might be most appropriate?

A) Pie chart

B) Scatter diagram

C) Histogram

D) Ogive