Exam 1

1. Metainformation

   Tag	Value
   file	Probability_uva-expected-value-214-en_uva-expected-value-214-en
   name	uva-expected-value-214-en
   section	Probability/Elementary Probability/Random variables/Expected value
   type	schoice
   solution	TRUE, FALSE, FALSE
   Type	Calculation
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	0.766
   p-value	0.8963

   Question

   Given is the probability distribution of X

   ———- —– —– X -1 1 P(X = x) 0.6 0.4 ———- —– —–

   The expectation value E(X) is equal to

   
   
   1. TRUE: -0.2
   2. FALSE: 0.1
   3. FALSE: 1
   
   
   1. 0.2: Correct
   2. 0.1: Incorrect
   3. 1: Incorrect