By Trevor Wegner

ISBN-10: 0702177741

ISBN-13: 9780702177743

An introductory information textual content for administration scholars who need to know tips on how to study facts generated from any region of business—be it advertising and marketing, finance, human assets, creation, or logistics—this publication highlights the function of facts as a choice aid instrument in administration selection making. all through, emphasis is put on the significance of knowledge and knowledge caliber; the diversity of attainable purposes, proven by means of various labored examples; transparent factors of the way each one procedure works; and the legitimate administration interpretation of the statistical findings. Assuming just a uncomplicated point of mathematical skill, this reference courses scholars via every one statistical technique.

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Extra info for Applied Business Statistics: Methods and Excel-Based Applications

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For example, almost half (47%) of all savers hold only 18% of total savings. At the top end of the Lorenz curve, it can be seen that the biggest 5% of savings accounts represent 22% of total savings. Overall, this bank has a large number of small savers, and a few large savers. 4 The Pareto Curve A useful application of the bar chart – especially in quality control studies – is called a Pareto curve. A Pareto curve is a combination of a sorted bar chart and a cumulative categorical frequency table.

Single Numeric Variable Numeric Frequency Distribution A numeric frequency distribution summarises numeric data into intervals of equal width. Each interval shows how many numbers (data values) falls within the interval. Follow these steps to construct a numeric frequency distribution: Determine the data range. 1 For the age of grocery shoppers, the age data range is 69 − 23 = 46 years. Choose the number of intervals. As a rule, choose between five and eight intervals, depending on the sample size: the smaller the sample size, the fewer the number of intervals, and vice versa.

Follow these steps to construct a trendline graph: The horizontal axis (x-axis) represents the consecutive time periods. The values of the numeric random variable are plotted on the vertical (y-axis) opposite their time period. The consecutive points are joined to form a trendline. Trendline graphs are commonly used to identify and track trends in time series data. 10 on weekly absenteeism levels at a car manufacturing plant. 10 Data on employee-days absent for a car manufacturing plant Week 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Absent 54 58 94 70 61 61 78 56 49 55 95 85 60 64 99 80 Week 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Absent 62 78 88 73 65 84 92 70 59 65 105 84 80 90 112 94 Produce a trendline plot of the weekly absenteeism levels (number of employee-days absent) for this car manufacturing plant over a period of 32 weeks.

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Applied Business Statistics: Methods and Excel-Based Applications by Trevor Wegner


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