Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_vufsw-correlation-1099-en_vufsw-correlation-1099-en
   name	vufsw-correlation-1099-en
   section	descriptive statistics/summary statistics/bivariate statistics/correlation
   type	schoice
   solution	TRUE, FALSE, FALSE, FALSE, FALSE
   Type	conceptual
   Program	NA
   Language	English
   Level	statistical literacy

   Question

   What happens to the correlation between two variables X and Y if we standardize them (in other words: if we transform them to their z-scores)?

   The correlation coefficient …

   
   
   1. TRUE: remains exactly the same.
   2. FALSE: becomes 1.00.
   3. FALSE: becomes 0.00.
   4. FALSE: can become either lower or higher depending on whether the association between X and Y is negative or positive.
   5. FALSE: can become either lower or higher depending on whether the difference between the means of X and Y is smaller or larger than 0.00.
   
   
   1. True
   2. False
   3. False
   4. False
   5. False