1.The minimum number of variables represented in a bar chart is _____.
A) 1
2.The minimum number of variables represented in a histogram is _____.
A) 2
3. Which of the following graphical methods is most appropriate for categorical data?
A) pie chart
4. In a stem-and-leaf display, _____.
A) one or more digits are used to define each stem, and a single digit is used to define each leaf
5. A graphical method that can be used to show both the rank order and shape of a data set simultaneously is a _____.
A) stem-and-leaf display
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) nclude a stem labeled ‘8’ and enter no leaves on the stem
7. Data that provide labels or names for groupings of like items are known as _____.
categorical data
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
9. A researcher asked 20 people for their zip code. The respondents zip codes are an example of _____.
A) categorical data
10. The age of employees at a company is an example of _____.
A) quantitative data
11. A frequency distribution is a _____.
A) tabular summary of a set of data showing the number of items in each of several nonoverlapping classes
12. The sum of frequencies for all classes will always equal _____.
A) the number of elements in a data set
13. In constructing a frequency distribution, as the number of classes is decreased, the class width _____.
A) increases
14. If several frequency distributions are constructed from the same data set, the distribution with the widest class width will have the _____.
A) fewest classes
15. Excel’s __________ can be used to construct a frequency distribution for categorical data.
A) COUNTIF function
16. There are 20 boys and 8 girls in a class. What type of graph can be used to display this information?
A) bar graph
17.The relative frequency of a class is computed by _____.
A) dividing the frequency of the class by the sample size
18. The sum of the relative frequencies for all classes will always equal _____.
A) 1
19. The height and weight are recorded by the school nurse for every student in a school. What type of graph would best display the relationship between height and weight?
A) scatter diagram
20. The percent frequency of a class is computed by _____.
A) multiplying the relative frequency by 100
21. A dot plot can be used to display _____.
A) the distribution of one quantitative variable
22. In a cumulative frequency distribution, the last class will always have a cumulative frequency equal to _____.
A) the total number of elements in the data set
23. What is the difference between a bar graph and a histogram?
A) a displays quantitative
24. A graphical device for depicting categorical data that have been summarized in a frequency distribution, relative frequency distribution, or percent frequency distribution is a(n) _____.
A) stem-and-leaf display
25. The difference between the lower class limits of adjacent classes provides the _____.
A) class width
26. A graphical device for presenting categorical data summaries based on subdivision of a circle into sectors that correspond to the relative frequency for each class is a _____.
A) pie chart
27. Categorical data can be graphically represented by using a(n) _____.
bar chart
28. Fifteen percent of the students in a School of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting. The graphical device(s) that can be used to present these data is(are) _____.
A) both a bar
29.Frequency distributions can be made for _____.
A) quantitative data
30. The total number of data items with a value less than or equal to the upper limit for the class is given by the _____.
A) cumulative frequency distribution
31.Excel’s __________ can be used to construct a frequency distribution for quantitative data.
A) PivotTable report
32.A graphical presentation of a frequency distribution, relative frequency distribution, or percent frequency distribution of quantitative data constructed by placing the class intervals on the horizontal axis and the frequencies on the vertical axis is a _____.
A) histogram
33.A common graphical presentation of quantitative data is a _____.
A) histogram
34. When using Excel to create a __________, one must edit the chart to remove the gaps between rectangles.
A) histogram
35. A __________ can be used to graphically present quantitative data.
A) stem-and-leaf display
36. A(n) __________ is a graph of a cumulative distribution.
A) ogive
37. Excel’s Chart Tools can be used to construct a _____.
A) stem-and-leaf display
38.To construct a bar chart using Excel’s Chart Tools, choose __________ as the chart type.
A) column
39. To construct a pie chart using Excel’s Chart Tools, choose __________ as the chart type.
A) Pie
40.To construct a histogram using Excel’s Chart Tools, choose __________ as the chart type.
A) column
41. Excel’s Chart Tools does NOT have a chart type for constructing a _____.
A) stem-and-leaf display
42. A tabular method that can be used to summarize the data on two variables simultaneously is called _____.
A) a crosstabulation
43.Excel’s __________ can be used to construct a crosstabulation.
PivotTable report
44.In a crosstabulation, _____.
A) quantitative
45.In Excel, the line of best fit for the points in a scatter diagram is called a _____.
A) trendline
46.When the conclusions based upon the aggregated crosstabulation can be completely reversed if we look at the unaggregated data, the occurrence is known as _____.
A) Simpson’s paradox
47.Before drawing any conclusions about the relationship between two variables shown in a crosstabulation, you should _____.
A) investigate whether any hidden variables could affect the conclusions
48.A histogram is NOT appropriate for displaying which of the following types of information?
A) cumulative frequency
49.For stem-and-leaf displays where the leaf unit is not stated, the leaf unit is assumed to equal _____.
A) 1
50. Which of the following graphical methods is not intended for quantitative data?
A) pie chart
51.Which of the following is LEAST useful in studying the relationship between two variables?
A) stem-and-leaf display