Firstly, I'm not sure if this should be in Advanced or Basic, but I put it in basic because I don't think the question I'm asking is advanced.
I've been given a task and one of the question asks me to put the data into a Frequency Distribution table.
Basically, I can't get my head around what the classes should be.
There are 100 figures, going from 0-17. So the range is 17.
I am told that I need to group this data into 9 equal classes, with midpoints 1, 3, 5 etc. This is just causing me a problem now, I can't figure out what the classes should be.
0 - 2
3 - 4
5 - 6...
Until I realised the midpoints were not 1, 3, 5.
So now my latest assumption is that the classes are:
0 - 1.99
2 - 3.99
4 - 5.99...
This also finishes into 9 equal classes (16 - 17.99) however, if we add both of them up and divide them by 2 to get the midpoint, we realise the midpoint is 0.995.
Could somebody please help me out? I must be missing something, I just don't understand how to go about it. I've tried several times, but this 1, 3, 5 midpoint is just blocking me now.
Thank you in advance.