13.2 Probability Distributions and Frequency Tables

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13.2Probability Distributions and Frequency
Tables
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• Suppose a researcher wished to do a study on the
  number of miles that the employees of a large
  corporation traveled to work each day.
• When the data is collected in its original form
  they are called raw data.

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• Because little can be obtained from this data we
  will organize it into a frequency distribution
• A frequency distribution is the organization of
  raw data in table form, using classes and
  frequencies.

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Frequency Table

• A data display that shows how often an item
  appears in a category.
• Relative Frequency the ratio of the frequency
  of the category to the total frequency.

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• Probability Distribution shows the probability
  of each possible outcome.
• Can be expressed in a frequency table
• (in a stats class you would learn the process for
  developing/constructing a frequency tablethere
  are a series of rule to use on how to divide your
  categories and how to place limits on your
  categories)

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Bulls eye hit 1 2 3 4 5 6
Frequency
Probability Distribution
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