Exam 1

1. Metainformation

   Tag	Value
   file	Descriptive-statistics_vufsw-correlation-0132-en_vufsw-correlation-0132-en
   name	vufsw-correlation-0132-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 of two variables (X and Y) if we standardize both variables (i.e., transform them into z-scores)?

   The correlation coefficient …

   
   
   1. TRUE: Stays exactly the same.
   2. FALSE: Becomes exactly 1.00.
   3. FALSE: Becomes exactly 0.00.
   4. FALSE: Can become either higher or lower; it depends on whether the relationship between X and Y is positive or negative.
   5. FALSE: Can become either higher or lower; this depends on whether the difference between the averages of X and Y is greater or less than 0.00.
   
   
   1. True
   2. False
   3. False
   4. False
   5. False