Exam 1

1. Metainformation

   Tag	Value
   file	Assumptions_vufsw-residualplot-0077-en_vufsw-residualplot-0077-en
   name	vufsw-residualplot-0077-en
   section	assumptions/homoscedasticity/residual plot
   type	schoice
   solution	FALSE, FALSE, TRUE, FALSE
   Type	conceptual
   Program	NA
   Language	English
   Level	statistical reasoning

   Question

   A scatterplot (scatterplot) with the residuals of a regression on the Y-axis and the independent variable on the X-axis can be used to check the assumption that….

   

   
   
   1. FALSE: The standardized slope (Beta) and correlation coefficient (r) are always are the same size at any value of x (linearity).
   2. FALSE: The relationship between the dependent and independent variable is causal (causality).
   3. TRUE: The conditional standard deviation of y (s_res) for each value of x is identical (constant variance).
   4. FALSE: The explained variance (R²) and the marginal variance are always are identical to each other (homogeneity).
   
   
   1. False
   2. False
   3. True
   4. False