Which of these statements is true regarding residuals in regression A. The sum of the residuals always adda to 1 B. This is a trick question. None of these is true. It dependa on the residuals (and the regression line) what they add up to or average. C. The mean of the residuals is always larger than zero D. The mean of the residuals is always equal to zero OE. The mean of the residuala in always amaller than zoro Which statement about experiments is most accurate? A. Participants are randomly assigned to conditions B. Experiments potentially allow to establish causality (in contrast to observational studies) O C. All potential confounds are controlled by randomization D. All of the above E. Participants pick which treatment (independent variable or IV) they receive F. Both B and E

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Which of these statements is true regarding residuals in regression
DA. The sum of the residuals always adds to 1
B. This is a trick question. None of these is true. It depends on the residuals (and the regression line) what they add up to or average.
C. The mean of the residuals is always larger than zero
D. The mean of the residuals is always equal to zero
E. The mean of the residuals is always smaller than zero
Which statement about experiments is most accurate?
A. Participants are randomly assigned to conditions
B. Experiments potentially allow to establish causality (in contrast to observational studies)
C. All potential confounds are controlled by randomization
D. All of the above
E. Participants pick which treatment (independent variable or IV) they receive
F. Both B and E
Transcribed Image Text:Which of these statements is true regarding residuals in regression DA. The sum of the residuals always adds to 1 B. This is a trick question. None of these is true. It depends on the residuals (and the regression line) what they add up to or average. C. The mean of the residuals is always larger than zero D. The mean of the residuals is always equal to zero E. The mean of the residuals is always smaller than zero Which statement about experiments is most accurate? A. Participants are randomly assigned to conditions B. Experiments potentially allow to establish causality (in contrast to observational studies) C. All potential confounds are controlled by randomization D. All of the above E. Participants pick which treatment (independent variable or IV) they receive F. Both B and E
If SSexplained of your model is zero, you might as well guess
A. The mean of the residuals
B. The mean of the predictor(s)
C. The mean of the outcome (measurements)
D. SSresidual
OE. SStotal
Partial correlation corresponds to
A. Correlating the residuals of two simple linear regressions
B. Calculating the Pearson correlation, and using that to estimate the regression to the mean effect
C. Correlating the residuals of a multiple regression
D. Interpreting the beta of a simple linear regression
E. None of the above
In a regression model, the sum of squares explained follows
A. r^3
B. sqrt(r)
C. the residual sum of squares
D. r
E. r^2
Transcribed Image Text:If SSexplained of your model is zero, you might as well guess A. The mean of the residuals B. The mean of the predictor(s) C. The mean of the outcome (measurements) D. SSresidual OE. SStotal Partial correlation corresponds to A. Correlating the residuals of two simple linear regressions B. Calculating the Pearson correlation, and using that to estimate the regression to the mean effect C. Correlating the residuals of a multiple regression D. Interpreting the beta of a simple linear regression E. None of the above In a regression model, the sum of squares explained follows A. r^3 B. sqrt(r) C. the residual sum of squares D. r E. r^2
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