Author Question: The estimated standard error of the mean is always used to predict a. sample size b. bias c. ... (Read 52 times)

captainjonesify

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The estimated standard error of the mean is always used to predict
 
  a. sample size
  b. bias
  c. central tendency
  d. the variability of the distribution of sample means

Question 2

An item would be considered extremely difficult if it had a difficulty
  index of
 
  a. .99
  b. .50
  c. .01
  d. none of these, since item difficulty is not a quantified value.



Ptupou85

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Answer to Question 1

d

Answer to Question 2

c



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