If a sample contains the numbers :
6.2; 8.5; 3.1; 7.6; 5.0; X
and the average of the six numbers is 5.5, then what is the last number (X)
in the sample?

Carlos Rodriguez <carlos@math.albany.edu>
This problem was contributed by a student in Elementary Statistics. It is offered as it is with no warranty of any kind
Last modified: Wed May 13 12:29:11 EDT 1998