Posted by ali on .
a set of maths exame score mean is 70 and variance is 8. a set of english score has mean is 74 and variance is 16. for which exame whould a score of x=78 have a higher standing?

statistics 
PsyDAG,
Standard deviation (SD) = square root of variance
Z = (scoremean)/SD
Whichever Z score is the highest.