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Home Q & A Board Other Fields Homework Help Family Studies
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dmson dmson
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6 years ago
According to your text, a perfect study would involve
 
  a. random assignment; random selection; realistic setting; control of all extraneous variables.
  b. random assignment or random selection; control over all extraneous variables.
  c. high levels of external validity.
  d. an experiment, which shows that one variable causes another.
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castrid915castrid915
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6 years ago
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dmson Author
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6 years ago
this is exactly what I needed
Marctheshark
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Yesterday
This helped my grade so much Perfect
dedricgard
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2 hours ago
Helped a lot
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