Why Don't They Just Say That?!©
A Simpler Way to Understand Something That Might Not Seem So Simple

Main ImagePROBABILITY AND STATISTICS EXPLAINED SIMPLY

Reading a textbook is not the same as talking to someone.  Now you can have the simple explanation given to you that the text cannot.

Why Don’t They Just Say That?! is a series of four short booklets that explains to you in basic terms, with clear examples and illustrations, exactly what you need to know to understand the material.  Presented to you with an emphasis on keywords and concepts that will allow you to do the homework and exam questions in your class, each booklet covers a  topic from your course (see below).

Designed to be used with materials from your class, Why Don’t They Just Say That?! is available exclusively from LansingMath.com.  Each booklet may be purchased and separately downloaded as a convenient PDF document for your personal use.  You can read them on your computer or print them out for easy use anywhere.

Go to this link to purchase today.  Each of the e-books is sold separately for $4 each.  Credit cards and PayPal transfers only.  You do not
need to have a PayPal account to use your credit card.

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BOOKLETS #1 & #3
MEANS AND VARIATIONS
HYPOTHESIS TESTING
Measures of central tendency: mean, median and mode; and measures of variation: standard deviation (and how to graphically compare them), variance and range.
Booklet #3 covers hypothesis testing and includes the copyrighted famous “how do I know which test to use” chart.
BOOKLET #2
PROBABILITY
Basic probability, including the really not so hard to understand conditional probabilities.  Keywords to help you decide which formula to use are emphasized.
BOOKLET #4
USING YOUR STATISTICAL CALCULATOR

Learn to  use your calculator’s built in functions to compute means and standard deviations, for both samples and populations.  Forget pushing “plus, plus, plus…divide”.  Let your calculator do the work for which it was designed!