ESSENTIALS OF MODERN BUSINESS STATISTICS WITH MICROSOFT EXCEL 5TH EDITION BY DAVID R. ANDERSON – TEST BANK

Sample Questions CHAPTER 3—DESCRIPTIVE STATISTICS: NUMERICAL MEASURES MULTIPLE CHOICE 1. The interquartile range is the difference between the a. first and second quartiles b. first and third quartiles c. second and third quartiles d. second and fourth quartiles ANS: B PTS: 1 2. The coefficient of determination is equal to the a. absolute value of the correlation coefficient b. squared value of the correlation coefficient c. square-root of the correlation coefficient d. inverse value of the correlation coefficient ANS: B PTS: 1 3. Generally, which one of the following is the least appropriate measure of central tendency for a data set that contains outliers? a. mean b. median c. 2nd quartile d. 50th percentile ANS: A PTS: 1 4. An important measure of location for categorical data is the a. mean b. median c. mode d. margin ANS: C PTS: 1 5. The measure of variability easiest to compute, but seldom used as the only measure, is the a. range b. interquartile range c. standard deviation d. variance ANS: A PTS: 1 6. In computing descriptive statistics for grouped data, the are used to approximate the data values in each class. a. class lower limits b. class upper limits c. class midpoints d. class ranges ANS: C PTS: 1 7. Which of the following is not a measure of variability of a single variable? a. range b. covariance c. standard deviation d. coefficient of variation