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Author Question: Use of a pretest as well as a posttest, rather than a posttest by itself, is valuable because a) ... (Read 27 times)

2125004343

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on: Jun 22, 2018
Use of a pretest as well as a posttest, rather than a posttest by itself, is valuable because
 
  a) One can evaluate and statistically adjust for any pretest sensitization effect.
  b) One can use a directional test to evaluate change, i.e., did patients improve.
  c) Reduces bias due to multiple statistical tests
  d) The error term is reduced in the statistical test and power is increased.

Question 2

How can power be augmented in an investigation?
 
  a) Through the use of posttests
  b) Through maintaining conventional levels of significance
  c) Through the use of directional tests
  d) Through controlling the side effects of treatment


itsakadoozi

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Reply #1 on: Jun 22, 2018
Answer to Question 1

Correct Answer: d

Answer to Question 2

Correct Answer: c


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