the degree of relationship that is shown to exist between one thing and another. Positive correlation is the increase or decrease occurring simultaneously between two random
statistics. When both
statistics simultaneously go up or down there is a possibility that they are both being affected by a common
cause. Once the correlation between
statistics has been noted, statistical
management can isolate the
factors affecting the statistical
change.
Negative correlation is when one
stat goes up and another goes down simultaneously. In this
situation there is also a possible common
cause.