DS Midterm Exam

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Author:
RissaJ
ID:
21563
Filename:
DS Midterm Exam
Updated:
2010-06-01 09:13:04
Tags:
statistics
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Description:
Midterm STudy
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  1. What are the two types of statistics?
    1) Descriptive

    2) Inferential
  2. What is Descriptive Statistics?
    Collecting, summarizing, and describing data.
  3. What is Inferential statistics?
    Drawing conclusions and/or making decisions concerning a population based only on sample data.
  4. What is a Variable?
    A characteristic of an item or individual.
  5. What are the two types of variables?
    1) Categorical (qualitative)

    2) Numerical (quantitative)
  6. What is a Categorical variable?
    A variable that has value that can only be placed into categories, such as "yes" and "no".
  7. What is a Numerical variable?
    A variable that has values that represent quantities.

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