Exam 1

1. Metainformation

   Tag	Value
   file	Inferential_Statistics_uva-simple-linear-regression-148-en_uva-simple-linear-regression-148-en
   name	uva-simple-linear-regression-148-en
   section	Inferential Statistics/Regression/Simple linear regression
   type	schoice
   solution	FALSE, FALSE, TRUE
   Type	Calculation
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	4.553
   p-value	0.0155

   Question

   The quantitative variables x and y have a standard deviation equal to s_x = 2 and s_y = 4. The correlation coefficient has the value 0.80. Then in the regression equation y = a + bx, the value of b is equal to

   
   
   1. FALSE: 0.40
   2. FALSE: 0.80
   3. TRUE: 1.60
   
   
   1. 0.40: Incorrect
   2. 0.80: Incorrect
   3. 1.60: Correct