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Critical Thinking Consider these types of graphs: histogram, bar graph. Pareto chart, pie chart, stem-and-leaf display.
(a) Which are suitable for qualitative data?
(b) Which are suitable for quantitative data?
(a)
Whether the graph types histogram, bar graph, Pareto chart, Pie chart, and stem-and-leaf are suitable for qualitative data.
Answer to Problem 1CR
Solution: The graph types bar graph, Pareto chart, and Pie chart are suitable for qualitative data.
Explanation of Solution
Qualitative data involves categories that are not numerical, such as eye color, type of coffee bean, and species of birds seen in a garden. The only numbers that can be related to these categories are frequencies, so only charts with one numerical axis can be used. It can be represented through pictures that explore the data in a visual way and visual representations focus on the themes found in the data.
Bar graph and Pareto chart are a way to visually represent
Pie chart graph is helpful when graphing
The graph types bar graph, Pareto chart, and Pie chart are suitable for qualitative data.
(b)
Whether the graph types histogram, bar graph, Pareto chart, Pie chart, and stem-and-leaf are suitable for quantitative data.
Answer to Problem 1CR
Solution: All graph types histogram, bar graph, Pareto chart, Pie chart, and stem-and-leaf are suitable for quantitative data.
Explanation of Solution
Quantitative data is information about quantities, that is, information that can be measured and written down with numbers.
A
A Bar graph is a diagram in which the numerical values of variables are represented by the height or length of lines or rectangles of equal width. In Pareto graph, data are displayed either horizontally or vertically and allow viewers to compare items, such as amounts, characteristics, times, and frequency.
A
A pie chart is a circular chart used to compare parts of the whole. It is divided into sectors that are equal in size to the quantity represented.
All graph types are suitable for quantitative data.
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Chapter 2 Solutions
Student Solutions Manual for Brase/Brase's Understanding Basic Statistics, 7th
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