A random sample means that every participant has an equal chance of being assigned to the treatment group or the control group.
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Q37: A positive correlation between two variables is
Q38: Net worth is a variable that tends
Q39: A correlation coefficient (r)can range from 0
Q40: The matched samples technique attempts to eliminate
Q41: Random assignment to groups is common when
Q43: External validity means an experiment defines operational
Q44: A common strategy in experimentation is to
Q45: The scientific method was first formally described
Q46: An internally valid experiment means that accurate
Q47: When an independent variable is manipulated,at least
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