Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-simple-linear-regression-772-en_uva-simple-linear-regression-772-en
   name	uva-simple-linear-regression-772-en
   section	Inferential Statistics/Regression/Simple linear regression
   type	schoice
   solution	TRUE, FALSE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	5.39
   p-value	0.0046

   Question

   In a regression analysis, the explanatory variable x has a standard deviation that is twice as small as that of the response variable y. Furthermore, the slope b of the regression line has the value 0.4. The correlation between x and y is then equal to

   
   
   1. TRUE: 0.2.
   2. FALSE: 0.4.
   3. FALSE: 0.8.
   
   
   1. Correct
   2. 0.4.: Incorrect
   3. 0.8.: Incorrect