Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_uva-standard-deviation-551-en_uva-standard-deviation-551-en
   name	uva-standard-deviation-551-en
   section	Descriptive statistics/Summary Statistics/Measures of Spread/Standard Deviation
   type	schoice
   solution	FALSE, TRUE, FALSE, FALSE
   Type	Calculation
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	4.483
   p-value	0.0196

   Question

   Given that y is a stochastic variable with mean 50 and sd 6. We take a sample of 4 realizations of this y. The standard deviation of the sample mean (sd) is then equal to

   
   
   1. FALSE: 1.5
   2. TRUE: 3
   3. FALSE: 9
   4. FALSE: 18
   
   
   1. 1.5: Incorrect
   2. 3: Correct
   3. 9: Incorrect
   4. 18: Incorrect