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Author Question: The Kuder-Richardson 21 formula for estimating the score reliability of a classroom achievement test ... (Read 32 times)

Themember4

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on: Jun 20, 2018
The Kuder-Richardson 21 formula for estimating the score reliability of a classroom achievement test has the disadvantage that
 
  a. it is difficult to compute.
  b. it assumes that all test items are of equal difficulty.
  c. it is inappropriate for a power test.
  d. the resulting reliability coefficient must be adjusted by using another formula.

Question 2

Choose the method of estimating score reliability that would be most useful for each of the types of tests listed below. An achievement test to be given as a pretest and a posttest in a classroom research study
 
  a. equivalent forms c. test-retest
  b. split-half


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whitcassie

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

B

Answer to Question 2

A


Themember4

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Reply 2 on: Jun 20, 2018
Wow, this really help

amandanbreshears

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Reply 3 on: Yesterday
Excellent

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