Exam 3: Correlation and Prediction

The multiple correlation coefficient (R²)is the proportion of variance in the criterion variable accounted for by all the __________ taken together.

A researcher notes that the correlation in the group she studies is so large that if there were not a correlation among people in general, there is less than a 5% chance of getting her correlation. Her correlation is thus:

With statistical prediction, the variable being predicted from is called the __________ and the variable being predicted to is called the __________.

The multiple correlation coefficient squared (R²)is the proportion of variance in the criterion variable accounted for by:

A(n)__________ is a table showing the correlations among several variables.

A graph that shows the pattern of the relation of two variables is a:

When is the correlation coefficient zero?

The dots on a scatter diagram seem to form a straight line that goes upward to the right. This is called:

When using Z scores, the cross-product of a high score with a low score will always be __________.

When a research article reports the correlations among several variables by listing them across the top and also across the side, then putting the correlations into the table, this is called a:

You are interested in the relation between the number of years working for a particular company and loneliness at work. You survey 40 workers at this company and figure a correlation between these two variables of -.90. This is considered a:

A scatter diagram shows the relation between hearing sensitivity and love of music (you are predicting love of music from hearing sensitivity). A dot located at 4.5 across and 8 up means the person had a score of 4.5 on __________.

According to your text, Mirvis and Lawler (1977)found that the higher the level of job satisfaction, the lower the level of absenteeism. Research on this topic has continued to show this __________ pattern all over the world and for university classes.

It is impossible for two variables to be essentially unrelated to each other. (True or False)

The invention of the correlation coefficient occurred as part of research being conducted for which ultimate purpose?

When using Z scores, the cross-product of a high score with a high score will always be __________.

Two variables, X and Y, have a strong linear correlation. Under what conditions can you determine the direction of causality just from knowing the correlation coefficient?

Sometimes a correlation coefficient is used to describe the consistency of a measure or test. One way to assess the consistency of a measure is to use it with the same group of people twice. The correlation between the two testings is:

Compare these two correlation coefficients: a = .4 and b = .8

The correlation coefficient squared is also called the: