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Author Question: A researcher is constructing a test for use in a study. In order to insure the highest reliability, ... (Read 50 times)

kshipps

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on: Jun 20, 2018
A researcher is constructing a test for use in a study. In order to insure the highest reliability, the researcher should
 
  a. increase the number of items on the test.
  b. plan to increase item homogeneity.
  c. try out the test on a heterogeneous group.
  d. All of these are true.

Question 2

A researcher has constructed an attitude scale in which each item is scored from 1 to 5 depending on the extent of agreement or disagreement. The estimate of score reliability that would be recommended for this scale is
 
  a. Kuder-Richardson formula 20.
  b. Kuder-Richardson formula 21.
  c. Cronbach's coefficient alpha.
  d. biserial correlation coefficient.
  e. phi coefficient.


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swimkari

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Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

C


kshipps

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Reply 2 on: Jun 20, 2018
Excellent

laurnthompson

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Reply 3 on: Yesterday
Wow, this really help

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