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In this section you'll find study materials for statistics help. Use the links below to find the area of statistics you're looking for help with. Each study guide comes complete with an explanation, example problems, and practice problems with solutions to help you learn statistics.

Study Guides

showing 71 - 80 of 216
  • 71.

    Populations and Samples Help

    Population In statistics, the term population refers to a particular set of items, objects, phenomena, or people being analyzed. These items, also called elements, can be actual subjects such as people or animals, but they can also be numbers or ...

    Source: McGraw-Hill Professional
  • 72.

    Distributions Help

    Distribution A distribution is a description of the set of possible values that a random variable can take. This can be done by noting the absolute or relative frequency. A distribution can be illustrated in terms of a table, or in terms of a graph. ...

    Source: McGraw-Hill Professional
  • 73.

    Statisitcs Definitions Help

    Truncation The process of truncation is a method of approximating numbers denoted as decimal expansions. It involves the deletion of all the numerals to the right of a certain point in the decimal part of an expression. Some electronic calculators ...

    Source: McGraw-Hill Professional
  • 74.

    Learning the Statistics Jargon Practice Test

    Review the following concepts if necessary: Experiments and Variables Help

    Source: McGraw-Hill Professional
  • 75.

    The Probability Fallacy Help

    The Probability Fallacy We say something is true because we've seen or deduced it. If we believe something is true or has taken place but we aren't sure, it's tempting to say it is or was ''likely.'' It's wise to resist this temptation.

    Source: McGraw-Hill Professional
  • 76.

    Probability Key Definitions Help

    Probability Key Definitions—Event Versus Outcome Here are definitions of some common terms that will help us understand what we are talking about when we refer to probability. Event Versus Outcome The terms ...

    Source: McGraw-Hill Professional
  • 77.

    Properties of Outcomes Help

    Properties of Outcomes—Law of Large Numbers Here are some formulas that describe properties of outcomes in various types of situations. Don't let the symbology intimidate you. Law of Large Numbers Suppose you toss ...

    Source: McGraw-Hill Professional
  • 78.

    Permutations and Combinations Help

    Factorial In probability, it is often necessary to choose small sets from large ones, or to figure out the number of ways in which certain sets of outcomes can take place. Permutations and combinations are the two most common ways this is done. ...

    Source: McGraw-Hill Professional
  • 79.

    The Density Function Help

    A Pattern Emerges When working with large populations, and especially with continuous random variables, probabilities are defined differently than they are with small populations and discrete random variables. As the number of possible values of a random variable ...

    Source: McGraw-Hill Professional
  • 80.

    Two Common Distributions Help

    Introduction to Two Common Distributions The nature of a probability density function can be described in the form of a distribution. Let's get a little bit acquainted with two classical types: the uniform distribution and the ...

    Source: McGraw-Hill Professional
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