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Question 1: Which is best practice? A. Contrasts of interest are determined by research questions and should be...

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Basic Math

Question 1:

Which is best practice?

  • A. Contrasts of interest are determined by research questionsand should be explicitly stated at the planning stage of anexperiment.
  • B. Contrasts of interest are best determined during theexploratory data analysis stage.
  • C. The contrasts one should investigate are determined by theobserved difference between treatment means; bigger observeddifferences are more interesting

Question 2

Which of the following is a contrast and orthogonal to

?1=4?1?(?2+?3+?4+?5)

  • A.

    ?2=?1??3

  • B.

    ?3=4?1+(?2+?3+?4+?5)

  • C.

    ?4=?2??3

Question 3

A contrast is a comparison of means.

True

False

Question 4:

Which of the following qualifies as a contrast?

  • A.

    ?1=0.5?1+0.5?2

  • B.

    ?2=??1–0.5(?2+?3)

  • C.

    ?3=?1+?2+?3

  • D.

    ?4=13(?1+?2+?3)

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