Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_vufsw-standardized_coefficient-1138-en_vufsw-standardized_coefficient-1138-en
   name	vufsw-standardized coefficient-1138-en
   section	inferential statistics/regression/standardized coefficient
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE
   Type	conceptual
   Program	NA
   Language	English
   Level	statistical literacy

   Question

   A teacher is interested in the association between the number of hours that his students have studied (X) and their examination marks (Y). He performs a regression analysis with these two variables. The standardized regression coefficient (“beta” in SPSS) of the number of study hours can be interpreted as …

   
   
   1. TRUE: The number of standard deviations that the number increases/decreases when the number of study hours increases by one standard deviation.
   2. FALSE: The standard deviation of the number of study hours.
   3. FALSE: The average increase/decrease of the grade if the student studies one extra hour.
   4. FALSE: None of the above.
   
   

   Solution

   The correct answer is: the number of standard deviations that the number increases / decreases when the number of study hours increases by one standard deviation.

   If you want to know more about regression models watch this clip.

   Levels of Difficulty
   Difficult

   M&T Bivariate linear regression
   Bivariate linear regression

   M&T Multivariate linear regression
   Default value

   
   
   1. True
   2. False
   3. False
   4. False