Ch02 - CHAPTER2 Inthefollowing please circlethe...

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CHAPTER 2 GRAPHICAL DESCRIPTIVE TECHNIQUES MULTIPLE CHOICE QUESTIONS In the following  multiple-choice questions, please circle the correct answer. 1. The most  appropriate  type  of chart  for determining  the  number  of observations  at  or   below a specific value is: a. a histogram b. a pie chart c. a time-series chart d. a cumulative frequency ogive ANSWER: d 2. The best type of chart for comparing  two sets of categorical data is: a. a line chart b. a pie chart c. a histogram d. a bar chart ANSWER: d 3. The total  area  of the six bars  in a relative  frequency  histogram  for which  the  width  of  each bar is five units is: a. 6 b. 5 c. 11 d. 1 ANSWER: b 6
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7 Chapter Two 4. Which of the following  statements about  pie charts is false? a. Pie charts are graphical representations  of the relative frequency distribution b. Pie charts are usually used  to display the relative sizes of categories for interval data.   c. Pie charts always have the shape  of a circle d. Area  of each  slice of a pie chart  is the  proportion  of the corresponding  category  of   the frequency distribution  of a categorical variable ANSWER: b 5. The total area of the bars in a relative frequency histogram: a. depends  on the sample size b. depends  on the number  of bars c. depends  on the width  of each bar d. Both a and  b ANSWER: c 6. Which of the following  statements is false? a. All calculations are permitted  on interval data b. All calculations are permitted  on nominal data c. The most important  aspect of ordinal data is the order of the data values d. The  only  permissible  calculations  on  ordinal  data  are  ones  involving  a  ranking   process ANSWER: b 7. Which of the following  statements is false? a. A frequency  distribution  counts  the number  of observations  that  fall into each of a   series on intervals, called classes that cover the complete range of observations. b. The   intervals   in   a   frequency   distribution   may   overlap   to   ensure   that   each   observation  is assigned  to an interval c. Although  the frequency  distribution  provides  information  about  how  the  numbers   in   the   data  set  are   distributed,   the   information   is  more   easily  understood  and   imparted  by drawing  a histogram d. The number  of class intervals we select in a frequency  distribution  depends  entirely   on the number  of observations  in the data set ANSWER: b 8. In general, incomes of employees in large firms tend  to be a. positively skewed b. negatively skewed c. symmetric d. None of the above ANSWER: a
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Graphical Descriptive Techniques 8 9. The relative frequency of a class is computed  by a. dividing  the frequency of the class by the number  of classes
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This document was uploaded on 10/25/2011 for the course LAPS 2320 at York University.

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Ch02 - CHAPTER2 Inthefollowing please circlethe...

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