A good example of a bell curve or normal distribution is the roll of two dice. The distribution is centered around the number 7 and the probability decreases as you move away from the center. Here are the % chance of the various outcomes when you roll two dice.
main argument definition, main argument meaning | English dictionary. [. 1 chief or principal in rank, importance, size, etc. 5 a principal pipe, conduit, duct, or line in a system used to distribute water, electricity, etc.
argument noun [ C or U ] (DISAGREEMENT) B1 a disagreement, or the process of disagreeing: The children had an argument about/over what game to play. He got into an argument with Jeff in the pub last night. A decision was finally made after some heated argument.