StatTutor Lesson - Density Curves

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Density curves
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      Question 1

      46

      Question 1.

      Which is a valid property of a density curve?

      A.
      B.
      C.

      Incorrect. Density curves are used to find probabilities so the total area has to equal 1.0.
      Correct. Density curves are used to find probabilities so the total area has to equal 1.0.
      Incorrect. Try again.
      2

      Question 2

      81

      Question 2.

      Why do we model data with a density curve?

      A.
      B.
      C.

      Incorrect. Density curves were invented to find probabilities.
      Correct. Density curves were invented to find probabilities.
      Incorrect. Try again.
      2

      Questions 3-4

      131

      Question 3.

      True or false: Density curves are smooth curves that follow the shape of the corresponding histogram.

      A.
      B.

      Incorrect. This is a correct statement.
      Correct. This is a correct statement.
      Incorrect. Try again.
      2