PSY-3301 Chapter 6 T/F Quiz (Set 3)
? Question 1 0 out of 10 points
Assuming a correlation exists, as the range of one of the variables decreases, r increases.
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? Question 2 10 out of 10 points
In a straight line the slope approaches zero as the line comes near the point X, Y.
? Question 3 10 out of 10 points
Since r is so widely used, it is appropriate to calculate r for nonlinear data.
? Question 4 10 out of 10 points
The slope of the line reveals whether the relationship is positive or negative.
? Question 5 10 out of 10 points
Causation implies correlation.
? Question 6 10 out of 10 points
If the value of r on ratio scaled raw data were 0.87 and the pairs of numbers were converted to ordinal data, and r calculated for the ordinal data, r would equal 0.87.
? Question 7 10 out of 10 points
For a linear relationship to exist, all the points must fall on a straight line.
? Question 8 10 out of 10 points
In a perfect linear relationship all the points must fall on a straight line.
? Question 9 10 out of 10 points
If the value of rho for a set of ordinal data equaled 0.68, the value of r for the same data would be 0.68.
? Question 10 10 out of 10 points
If one calculates r for a set of data and r equals 0.84, one can be certain that the relationship between the variables is not spurious.
