Question

What is the z-score for a test score of 440 in which the test has a normal distribution of N(400, 50)?
PsyDAG
Z = (score-mean)/SD
Anonymous
mean-score/sd
PsyDAG
Equation needs to be "score-mean" rather than the opposite, so scores above the mean will have a positive Z score and those below the mean will have a negative Z score.