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Extra info for Schaum's Outline of Business Statistics Fourth Edition
Indicate the lower and upper limits of the class in which this result was included. Ans. 9. 39. 18. 40. 18. 41. 40 from the standpoint of skewness. Ans. The frequency curve appears to be somewhat positively skewed. CHAP. 42. 18 and prepare an ogive to present this distribution graphically. 43. 19 presents the amounts of 40 personal loans used to ﬁnance appliance and furniture purchases. Suppose we wish to arrange the loan amounts in a frequency distribution with a total of seven classes. Assuming equal class intervals, what would be a convenient class interval for this frequency distribution?
8 minutes. 7. 8 minutes. (c) For convenience we refer to the second listed class, for which both class limits are speciﬁed. 8. 9. The Excel instructions that result in the output presented in Fig. 2-28 are as follows: (1) Open Excel. 7 into column A of the worksheet. (2) Click Tools ! Data Analysis ! Histogram and open the Histogram dialog box. Designate the Input Range as $A$1:$A$30 and the Output Range as $C$1 (to provide for one column of space between the input and the output). (3) Click the checkbox for Chart Output.
0. 5 THE MODE The mode is the value that occurs most frequently in a set of values. Such a distribution is described as being unimodal. For a small data set in which no measured values are repeated, there is no mode. When two nonadjoining values are about equal in having maximum frequencies associated with them, the distribution is described as being bimodal. Distributions of measurements with several modes are referred to as being multimodal. EXAMPLE 4. The eight salespeople described in Example 1 sold the following number of central air-conditioning units: 8, 11, 5, 14, 8, 11, 16, and 11.