The conditions of concomitant variation,time order of occurrence of variables and elimination of other possible causal factors,are necessary but not sufficient to demonstrate causality.
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Q1: If the goal of the researcher is
Q2: Test units are individuals,organizations,or other entities whose
Q3: With experimental designs,it is possible to control
Q4: Independent variables are variables or alternatives that
Q6: Evidence of concomitant variation,time order of occurrence
Q7: History (H)refers to the occurrence of events
Q8: The longer the time interval between observations,the
Q9: Extraneous variables are also called confounding variables
Q10: There is no problem developing experimental designs
Q11: Independent variables are the variables that measure
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