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Author Question: In the related measures t test, the degrees of freedom equals _____. a. N - 2 c. n1 + n2 b. N - ... (Read 27 times)

CORALGRILL2014

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on: Jun 19, 2018
In the related measures t test, the degrees of freedom equals _____.
 
  a. N - 2 c. n1 + n2
  b. N - 1 d. n1 + n2 - 2

Question 2

In the related measures t test, N is always equal to the number of _____.
 
  a. participants c. difference scores
  b. groups d. treatments


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jointhecircus

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

B
Degrees of freedom equals N - 1 in the related measures t test. The calculations are carried out on a single set of scores, each of which represents a difference between a pretest and posttest score.

Answer to Question 2

C
N refers to the number of difference scores. If the same people participate in both conditions, N equals the number of participants, but if there are matched participants, N doesn't equal the number of participants.


CORALGRILL2014

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Reply 2 on: Jun 19, 2018
Gracias!

kthug

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Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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