Examlex
The comet that broke into more than 20 pieces and then collided with Jupiter in 1994 was
Spurious Relationship
A false association between two variables that appears to be causally linked but is actually due to an extraneous variable.
Nonexperimental Method
Use of measurement of variables to determine whether variables are related to one another. Also called correlational method.
Nonexperimental Method
A research method where the researcher observes and records behavior without manipulating any variables.
Experimental Control
The process of keeping variables constant or regulating external factors to ensure that observed effects are due to manipulated variables only.
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Q12: Which of the following can a black
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Q14: When an astronomer measures a color index
Q22: Mars rovers (such as Opportunity and Curiosity)
Q27: What objects did Harlow Shapley use as
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Q31: Which of these did the June 1908
Q32: When astronomers carefully examine the planets found