PSYC 300A Chapter Notes - Chapter 6: Heteroscedasticity, Xm Satellite Radio, Squared Deviations From The Mean

• School: University of Victoria
• Department: Psychology
• Course: PSYC 300A
• Professor: David Medler

Document Summary

Psyc 300a - chapter 6: regression: regression objectives for regression are: (i) (ii) the role of prediction with bivariate data. Predict y given x by applying an equation to describe linear relationship. Interpolation: can only predict scores within observed range of data: regression line (y" or x"): best- tting line that describes bivariate data. Estimate of what the true data is. Re ects a mathematical, linear relationship between 2 variables. Always goes through the mean of x & the mean of y. Ay = my - by(mx: when using y to predict x, compute the intercept for x". Ax = mx - bx(my) (b) slope (b): constant value that changes proportionally across x & y values: for any given pair of predicted values . = ( y x) = rise run: in uenced by the amount of variability in the data.