Highly praised for its exceptional clarity, technical accuracy, and useful examples , Weiers’ INTRODUCTION TO BUSINESS STATISTICS, Seventh Edition. Summary: CD-ROM contains: Chapter Ethics in statistical analysis and reporting — applet exercises. Bookmark: ; Work. , English, Book, Illustrated edition: Introductory business statistics / Ronald M. Weiers ; with business cases by J. Brian Gray, Lawrence H. Peters. Weiers.
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For the speed-measurement data in Table 2. A frequency distribution may be converted to show either relative or cumulative frequencies for the data. Click to select Existing Worksheet and enter D1 into the box.
Found at these bookshops Searching – please wait Within the two columns the variable to be represented by the vertical axis should always be in the column at the right. Permutations and Combinations 5.
Relative frequencies can be useful in comparing two groups of unequal size since the actual frequencies would tend to be greater for each class within the larger group than for a class in the smaller one.
Introduction and Background Excel and Minitab differ slightly in how they describe the classes in a frequency distribution. By converting data to a frequency distribution we gain a perspective that helps us see the forest in- stead of the individual trees.
Cross-tabulations help us to identify and examine possible relationships between the variables. From the Scatter submenu click the fifth option Scatter with Straight Lines. The labels and data values have already been entered as shown in the printout.
As a result it looks as though the company has done very well over the years shown. This is midway between the upper and lower class limits.
When cumula- tive frequencies are divided by busines total number of observations the result is a cumulative relative frequency distribution. This chart shows how soft drink sales millions of cases in Central America increased from through Click the Gender label again and drag it into the Values rectangle.
Introduction to Business Statistics
It could be all adult citizens in the United States all commercial pilots employed by domestic airlines or every roller bearing ever produced by the Timken Company. Springdale Shopping Survey Business Case: Select the first option Clustered Column from the 2-D Column choices.
This is an important consid- eration because the right or wrong symbols can lend nonverbal or emotional content to the display. Excel This popular spreadsheet software offers a limited number of statistical tests and statlstics but it delivers excellent graphics and it seems to be installed in nearly every computer on the planet.
Introduction to Business Statistics : Ronald M. Weiers :
If you identify the variable as quantitative indicate whether it would be discrete or continuous. Not allowed since a value of 60 could fit into either class: This provides intervals from 45 to 90 with the width of each interval being 5.
Political pollsters are among the heavy users of inferential statistics typi- cally questioning between and voters in an effort to predict the vot- ing behavior of millions of citizens on election day.
Introduction and Background and descriptor to an increasingly active and useful business tool which would influ- ence decisions and enable inferences to be drawn from sample information. By using measures of central tendency we can numerically describe the typical income of members of each group.
As an example of the calculation of a population mean consider the following data for shipments of peanuts from a hypothetical U. Click on the first option Pie in the 2-D Pie menu.
The best-fit line is linear and has a negative slope busoness y decreasing as x increases. It is available on the premium website and can be automatically installed by means of the startup instructions.
Home Depot Corporation Annual Report pp. Business statistics is not only relevant to your present academic program it is also relevant to your future personal and professional life.
statistcis This record-keeping and enumeration function remained dominant well into the 20th century as this observation on the role of statistics in the com- mercial and political world of that time indicates: According to the Los Angeles busihess council that city will have lost over million in federal aid because the census had allegedly missed residents most of whom were urban minority and poor. Whenever possible class widths should be round numbers e.
Nominal Ordinal Interval Ratio Each number represents a category Greater than and less than relationships and Units of measurement and and Absolute zero point 13 Source: Point Estimate for y Comments and reviews What are comments?
Fractional values are also possible however. Select With Connect Line. Click on the Column labels cell and edit by entering Gender. Does this information represent descriptive statistics or inferential statistics Why Source: Construct a frequency distribution for these data.
An alternative would have been to express the counts in etatistics of percentages—e. From this perspective union hourly workers use a median of 6. Number of years of school completed: To f nd out more about specif c strengths and weak- nesses of the areas set up a frequency distribution for variable 10 i. Empty classes are included at each end so the curve will intersect the horizontal axis. These workbooks are typically installed into the same directory where the data files are located.
A census involves measuring all people or objects in the population. Visual Description of Data 53 2. Age Group Income 25 to 35 35 to 45 45 to 55 55 to 65 65 or over under 8. A telephone survey has been conducted to identify strengths and weaknesses of these areas and to f nd out how they f t into the shopping activities of local residents.
Contents vii Chapter 4: