A Note on the Correlation of Gains and Initial Status
Donald W Zimmerman1, Richard H Williams1
1a Carleton University and University of Miami , USA.
Abstract:
By writing the familiar equation for the correlation of gains and initial status in a form which reveals that the correlation does not depend on the standard deviations of pretest and posttest scores separately, but only on their ratio, it is possible to exhibit a one-parameter family of functions which throws new light on this relationship. The same family of functions provides information about the correlation between the true components of gains and initial status, as well as information about the correlation between the error components of gains and initial status.
Related Concept Videos
Gain
Gain:
Suppose Vin is the input and Vout is the output signal to a circuit.
Calibration Curves: Correlation Coefficient
Spearman's Rank Correlation Test
Spearman's test calculates correlation by...
Coefficient of Correlation
If you suspect a linear relationship between x and y, then r can measure how strong the linear relationship is.
What the VALUE of r tells us:
The value of r is always between –1 and +1: –1 ≤ r ≤ 1.
The size of the correlation r indicates the...
Correlation of Experimental Data
For example, a spherical particle moving through a viscous fluid experiences drag. Dimensional analysis shows that the drag force depends on the particle's diameter, velocity,...
Correlations


