Assertion: regression's variable | /r/HasProperty | standardized
Facets:
Source sentences:
text: The regression equation is simpler if variables are standardized so that their means are equal to 0 and standard deviations are equal to 1, for then b = r and A = 0.
text: A researcher has collected data on three psychological variables, four academic variables (standardized test scores), and the type of educational program the student is in for 600 high school students.
text: The correlation coefficient, $r$, is the slope of the regression line when both variables have been standardized first.