Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_uva-bar-graph-8-en_uva-bar-graph-8-en
   name	uva-bar-graph-8-en
   section	Descriptive statistics/Data representation/Graphs/Bar graph
   type	schoice
   solution	FALSE, TRUE, FALSE
   Type	Conceptual
   Language	English
   Level	Statistical Literacy
   IRT-Difficulty	-3.444
   p-value	0.9814

   Question

   Check out the bar charts below. The bar charts show the conditional proportions of the variables blonde (yes or no) and glasses wear (yes or no). Evaluate whether it is likely that there is an association between these variables.

   

   
   
   1. FALSE: It is likely that there is an association because the conditional proportions of ‘blonde’ are different for ‘wearing glasses’ than for ‘not wearing glasses’.
   2. TRUE: There is no reason to think there is an association because the conditional proportions of ‘blonde’ are the same for ‘wearing glasses’ as for ‘not wearing glasses’.
   3. FALSE: Whether there might be an association between ‘blonde’ and ‘wearing glasses’ cannot be inferred from these conditional proportions.
   
   
   1. It is likely that there is an association because the conditional proportions of “blonde” are different for “wearing glasses” than for “not wearing glasses. Incorrect
   2. There is no reason to think there is an association because the conditional proportions of ‘blonde’ are the same for ‘wearing glasses’ as for ‘not wearing glasses’…: Correct
   3. Whether there might be an association between ‘blonde’ and ‘wearing glasses’ cannot be read from these conditional proportions…: Incorrect