Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_uva-variance-218-nl_uva-variance-218-nl
   name	uva-variance-218-nl
   section	Descriptive statistics/Summary Statistics/Measures of Spread/Variance
   type	schoice
   solution	TRUE, FALSE, FALSE
   Type	Calculation
   Language	Dutch
   Level	Statistical Literacy
   IRT-Difficulty	4.02
   p-value	0.1114

   Question

   Gegeven is de volgende tabel

   X	1	2	3	4
   P(X = x)	0.2	0.3	0.3	0.2

   De variantie van de kansvariabele X, Var(X), is

   
   
   1. TRUE: 1.05
   2. FALSE: 2.5
   3. FALSE: 6.25
   
   
   1. 1.05: Correct
   2. 2.5: Incorrect
   3. 6.25: Incorrect