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Author Question: The following data show the means for four treatment conditions as well as the overall means for the ... (Read 32 times)

notis

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on: Jun 19, 2018
The following data show the means for four treatment conditions as well as the overall means for the columns and the rows. For these data, what numbers are compared to assess the main effect of factor A? A1 A2 B1 M = 20 M = 60 M = 40 B2 M = 30 M = 70 M = 50 M = 25 M = 65
 
  a. 30; 70
  b. 20; 30
  c. 40; 50
  d. 25; 65

Question 2

When the change from pretest to posttest is due not to your program but rather to a change in the way you measured the outcome, there is a(n) _______________ threat to internal validity.
 
  Fill in the blank(s) with correct word


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Harbringer

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Reply #1 on: Jun 19, 2018
Answer to Question 1

d

Answer to Question 2

instrumentation


notis

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Reply #2 on: Jun 19, 2018
Thank you


Harbringer

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Reply #3 on: Jun 19, 2018
No problem :)


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