Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_uva-correlation-543-en_uva-correlation-543-en
   name	uva-correlation-543-en
   section	Descriptive statistics/Summary Statistics/Bivariate statistics/Correlation
   type	schoice
   solution	FALSE, FALSE, FALSE, TRUE
   Type	Calculation
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	3.308
   p-value	0.2388

   Question

   Two variables X and Y were measured to 8 individuals. From these, one calculated the following:Ê n = 8 ΣX = 40 ΣX² = 210 ΣY = 48 ΣY² = 300 ΣXY = 230 The Pearson correlation coefficient of X and Y is then

   
   
   1. FALSE: -0.91
   2. FALSE: -0.08
   3. FALSE: 0.84
   4. TRUE: 0.92
   
   
   1. 0.91: Incorrect
   2. 0.08: Incorrect
   3. 0.84: Incorrect
   4. 0.92: Correct