Hi;

I not quite sure when I shoud be dealing with limits or boundaries?

My data is sorted as follows.

Now I'm thing the data should be graphed using class boundaries

because this creates no gaps is this correct?

also I the data had no gaps ie 50-60,60-70,70-80... are class limits and boundaries the same

therefore I would graph using limits is this correct?

essentially if there's gaps create boundaries and no gaps use limits(which themselves are the boundaries)?

Thanks.