StatTutor Lesson - Comparing Several Means

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Comparing several means
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      Question 1

      37

      Question 1.

      True or false: The P-values for these three tests should be averaged to get one P-value for all three tests.

      A.
      B.

      Incorrect. There is no method for combining these three P-values.
      Correct. There is no method for combining these three P-values.
      Incorrect. Try again.
      2

      Question 2

      80

      Question 2.

      What is a major problem with multiple tests on three or more means?

      A.
      B.
      C.
      D.

      Incorrect. Not knowing what P-value(s) to believe, not having one hypothesis for all of the means and inflating the overall type I error rate are all major problems of multiple comparisons.
      Correct. Not knowing what P-value(s) to believe, not having one hypothesis for all of the means and inflating the overall type I error rate are all major problems of multiple comparisons.
      Incorrect. Try again.
      2

      Question 3

      138

      Question 3.

      What one overall test has one hypothesis, one test statistic and one P-value for testing three or more means?

      A.
      B.
      C.

      Incorrect. A one-way analysis of variance procedure allows us to test equality of three or more means with one hypothesis, one test statistic, and one P-value.
      Correct. A one-way analysis of variance procedure allows us to test equality of three or more means with one hypothesis, one test statistic, and one P-value.
      Incorrect. Try again.
      2