Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-simple-linear-regression-794-en_uva-simple-linear-regression-794-en
   name	uva-simple-linear-regression-794-en
   section	Inferential Statistics/Regression/Simple linear regression
   type	schoice
   solution	FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	5.046
   p-value	0.0098

   Question

   To investigate whether a relationship exists between x and y, a regression analysis is performed. The directional coefficient is tested and is found to be significant. The values for x and y are plotted in the graph below. The graph shows that probably an assumption has been violated. This is the assumption that states that

   

   
   
   1. FALSE: The population mean of y is linearly related to x.
   2. TRUE: The population standard deviation of y is the same across all values of x.
   3. FALSE: The values of x and y are randomly drawn from the population.
   
   
   1. The population mean of y is linearly related to x.: Incorrect
   2. The population standard deviation of y is the same across all values of x.: Incorrect: Correct
   3. The values of x and y are drawn randomly from the population…: Incorrect