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This page contains links to web sites and pages having to do with statistics. The information is divided into the following categories:
"Gateway Virginia is an on-line service dedicated to provide Virginians -- and anyone, anywhere, with an interest in the Old Dominion -- with the most complete and up-to-date information about the state and its people. We hope to inform, entertain and serve. We will accomplish this goal by drawing on various resources available to us including our on-line media affiliates, public institutions, government agencies, organizations and private individuals."
MarketSearch Corporation, "Information you need from people you trust," provides numerous examples of opinion and marketing surveys.
What is the distribution of colors among the population of plain M&Ms (and other types) sold in the United States? Here is the official word from the Mars Company:
Some calculations from Chapter 13 can be completed with the "NCSS Probability Calculator". These calculations include standardizing the value "X" of a normal variable (x) to a standard normal value "Z", determining the percentile for this particular value (i.e., the probability of being less than or equal to this value), and determining the probability of being greater than or equal to this value. You may also specify a certain percentile (probability), and the calculator will give the observed value (for "X" and "Z") corresponding to that percentile. This probability calculator will give results for any values of interest, including those that are not found in Table B of the text.
The "NCSS Probability Calculator" is shareware developed by NCSS. Although it may be distributed free of charge, NCSS retains all copyrights, and
you may not charge another person for this program. You may download the calculator
by clicking on the following file: <ncsscalc.zip>.
This is a zipped file, and you will have to use software such as <Winzip95.exe> to unzip this file. Simply download the
<Winzip95.exe> file into a directory that you will remember, and then go to that
directory and double click the file; it is a self-extracting executable file and will
install itself. Simply follow the directions. After you have unzipped <ncsscalc.zip>
into your desired directory, click on <ncsscalc.exe>.
The calculator can also be downloaded from the NCSS website: 
, where you can read about
other NCSS products including their statistical software package.