Probabilities & Statistics 1 - OCR (not MEI) - jan 25th 2012 discussion

more like an overconcerned obssessive parent? shouldnt your daughter be asking the questions if she cares?
also theres no need to boast about these exams

YOU DIDNT TAKE THE EXAM YOUR DAUGHTER DID SO LEAVE


also what did it mean by one unit is 2cm? was one unit one of those tiny squares, or 1 unit made up from a 10x10 of the little squares

That's what I got for both What did everyone get for the mean and standard deviation?
My sd was around 3.07 I think

what did everyone get for the coordinates for the cumulative frequency

Yeah I think mine was 2.7 too

For coordinates I think I got (0,0) and (2,6)

Probably wrong :/

I got (0.5,0) and (3.5,6).

I assumed the boundary extensions from the first part of the question carried over but I could be wrong.
If it started at the origin, that would indicate there were some values between 0 and 1, which there were not. I could be wrong :s

I got 5.43 for the mean and 3.08 for the standard deviation.

And what did you get as the coordintes for the c.f. graph?

I think that will be two out of three. btw I put (-0.5,0) and (0.5,0) for the coordinates.