Statistics with Probability

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  • Final Review Question 5
  • December 20, 2012 at 4:49 am #12992

    Roger Herra
    Participant

    I’m having difficulties understanding what values to use in the chart…..

    What chapter can this be found in the Book?

    December 20, 2012 at 9:54 am #16263

    wantong
    Member

    Not 100% sure if this is correct, but take a look and see if it make any sense to you.

    December 20, 2012 at 2:30 pm #16266

    Ezra Halleck
    Participant

    A contingency table is a basic tool in statistics, just as a tree is a basic tool for probability. I take this as a criticism. In the future, I will make sure to spend more classtime explaining and using the tool. The book does discuss them in 13.3. There is also a short wikipedia page that you might take a peak at:
    http://en.wikipedia.org/wiki/Contingency_table

    Note that all of these use frequencies instead of the probabilities (decimals) that I used in class. But going from one to the other is not hard: divide each of the entries by the total number in the sample to convert to probabilities.

    Ironically enough, I am using the “statistics” tool for a problem in probability. The material being tested by this question comes from chapter 4. In particular the vertical slash | refers to conditional probability.

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