SME_8e_Ch_02_Section_3 - CHAPTER 2 SECTION 3: GRAPHICAL AND...

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1 CHAPTER 2 SECTION 3: GRAPHICAL AND TABULAR DESCRIPTIVE TECHNIQUES MULTIPLE CHOICE 65. Which of the following represents a graphical presentation of interval data? a. A bar chart. b. A histogram. c. A pie chart. d. All of these choices are true. ANS: B PTS: 1 REF: SECTION 2.3 66. Which of the following statements about histograms is false? a. A histogram is a summary of interval data. b. A histogram is made of a series of intervals, called classes. c. The classes in a histogram cover the complete range of observations. d. All of these choices are true. ANS: D PTS: 1 REF: SECTION 2.3 67. Which of the following statements about histograms is false? a. The intervals of a histogram do not overlap. b. Every observation is assigned to one and only one class in a histogram. c. The intervals of a histogram are equally wide. d. None of these choices. ANS: D PTS: 1 REF: SECTION 2.3
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2 68. Which of the following describes the shape of the histogram below? a. Positively skewed b. Negatively skewed c. Symmetric d. None of these choices ANS: C PTS: 1 REF: SECTION 2.3 69. The relative frequency of a class in a histogram is computed by a. dividing the frequency of the class by the number of classes. b. dividing the frequency of the class by the class width. c. dividing the frequency of the class by the total of all frequencies. d. None of these choices. ANS: C PTS: 1 REF: SECTION 2.3
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3 70. Compare the two histograms below. Which statement is true? a. The center of histogram A is lower than the center of histogram B. b. The center of histogram A is higher than the center of histogram B. c. The center of histogram A is the same as the center of histogram B. d. You cannot compare the centers of these two histograms without the original data. ANS: A PTS: 1 REF: SECTION 2.3
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4 71. Compare the two histograms below. Which statement is true? a. The spread of histogram A is smaller than the spread of histogram B. b. The spread of histogram A is larger than the spread of histogram B. c. The spread of histogram A is the same as the spread of histogram B. d. You cannot compare the spreads of these two histograms without the original data. ANS: C PTS: 1 REF: SECTION 2.3
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5 72. Compare the two histograms below. Which statement is true? a. The shape of histogram A is the same as the shape of histogram B. b. The shape of histogram A is positively skewed compared to histogram B. c. The shape of histogram A is negatively skewed compared to histogram B. d. You cannot compare the shapes of these two histograms without the original data. ANS: A PTS: 1 REF: SECTION 2.3
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6 73. A modal class in a histogram is the class that includes a. the largest number of observations. b. the smallest number of observations. c.
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This note was uploaded on 09/28/2010 for the course FINOPMGT 250 taught by Professor Kumar during the Spring '10 term at University of Massachusetts Boston.

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SME_8e_Ch_02_Section_3 - CHAPTER 2 SECTION 3: GRAPHICAL AND...

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