DESCRIPTIVE STATISTICS: TABULAR AND GRAPHICAL PRESENTATION

MULTIPLE CHOICE QUESTIONS In the following multiple-choice questions, circle the correct answer. 1. The minimum number of variables represented in a bar graph is a. one b. two c. three d. four ANSWER: a 2. The minimum number of variables represented in a histogram is a. one b. two c. three d. four ANSWER: a 3. Which of the following graphical methods is most appropriate for qualitative data? a. ogive b. pie chart c. histogram d. scatter diagram ANSWER: b 4. In a stem-and-leaf display, a. a single digit is used to define each stem, and a single digit is used to define each leaf b. a single digit is used to define each stem, and one or more digits are used to define each leaf c. one or more digits are used to define each stem, and a single digit is used to define each leaf d. one or more digits are used to define each stem, and one or more digits are used to define each leaf ANSWER: c 5. A graphical method that can be used to show both the rank order and shape of a data set simultaneously is a a. relative frequency distribution b. pie chart c. stem-and-leaf display d. pivot table ANSWER: c 6. The proper way to construct a stem-and-leaf display for the data set {62, 67, 68, 73, 73, 79, 91, 94, 95, 97} is to a. exclude a stem labeled ‘8’ b. include a stem labeled ‘8’ and enter no leaves on the stem c. include a stem labeled ‘(8)’ and enter no leaves on the stem d. include a stem labeled ‘8’ and enter one leaf value of ‘0’ on the stem ANSWER: b 7. Data that provide labels or names for categories of like items are known as a. categorical data b. quantitative data c. label data d. indicator data ANSWER: a 8. A researcher is gathering data from four geographical areas designated: South = 1; North = 2; East = 3; West = 4. The designated geographical regions represent a. categorical data b. quantitative data c. label data d. either categorical or quantitative data ANSWER: a 9. Data that indicate how much or how many are know as a. categorical data b. quantitative data c. label data d. counter data ANSWER: b 10. The ages of employees at a company represent a. categorical data b. quantitative data c. label data d. longevity data ANSWER: b