Monday, March 8, 2010
SPSS
SPSS definitions:
p-value = Significance (SPSS)
pearson r = Pearson Correlation (bivariate SPSS)
Results section
"A significant correlation was observed between stress3 and coursgrad, r=-0.83, p=0.000."
Discussion section
"I interpret the correlation...." Correlation is for prediction, not causal. Avoid the impression that readers may have that you view it as causal.
r squared is the percentage of variance in y that is systematically varying with x. R-squared is the name of the game. The higher the better with the least number of independent variables.
y-intercept is the number in the constant row under Unstandardized Coeffificent B column (y = slope * x + y-intercept) (y=bx + a) See image above.
slope is the number under the constant row in the same area. (b**)
**If you standardize b, you get r.
The Ed Psych Data Directions in Blackboard is what we need to know.
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