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Author Question: A ____________ is a threat to internal validity when groups in an experiment are not equivalent at ... (Read 61 times)

maegan_martin

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on: Aug 17, 2018
A ____________ is a threat to internal validity when groups in an experiment are not equivalent at the beginning of the experiment with regard to the dependent variable.
 
  a. beginning error
  b. selection error
  c. pretest error
  d. selection bias
  e. experimental bias

Question 2

The ________ technique is used particularly in ecological studies in order to estimate the size of unknown populations.
 
  Fill in the blank(s) with correct word


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joneynes

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Reply #1 on: Aug 17, 2018
Answer to Question 1

D

Answer to Question 2

Mark recapture or tag and release


maegan_martin

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Reply 2 on: Aug 17, 2018
YES! Correct, THANKS for helping me on my review

kishoreddi

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Reply 3 on: Yesterday
Wow, this really help

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