REMS Chapter 8
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involves collecting data to determine whether, and to what degree, a relationship exists between two or more quantifiable variables
indicates the extent to which variables vary in a systematic way
refers to the probability that the results would have occured simply due to chance
a researcher attempts to gain insight into variables or factors that are related to a complex variable
the most common technique uses the product moment correlation coefficient, usually referred to as the ____, a measure of correlation that is appropirate when both variables to be correlated are expressed as continuous data.
if the data for at least one variable are expressed as rank or ordinal data, the appropriate correlation coefficient to use is the rank difference, usually referred to as the _____
the reduction in correlation coefficients that tends to occur if the measures have low reliability.
the variable used to predict is called the ________
the variable that is predicted is a complex variable called the _________
an attempt to determine which of a number of variables are most highly related to the criterion variable
An interesting characteristic of prediciton studies is ______, the tendency for the predicition to be less accurate for a group other than the one on which it was originally developed
Any predictive relation should be subject to ________ with at least one other group, and variables no longer found to be related to the criterion measure should be removed
a variable that cannot be directly observed or controlled, can influence the link between predictor and criterion variables
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