Additional variables may often add nuance or an alternative explanation for a relationship and they are:
A variable can be described as the characteristics as well as number,which can be used in the statistics as well as in other field and they are the quantities that can be measured or counted.
It should be noted that this variable can as ell be regarded as the data item which could be Age, business income and they can be used in the processing of other information.
In conclusion, Moderator serves as the variable which help to discus about the relationship that exist two main variables and how they are related in different ways .
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