Hmm not that I need this exam. I was fine on the first 6 questions, made a silly mistake on the last question (when integrating, I didn't think to chuck in a +c, which apparently there was).
Oh well, thank goodness for ECF right? I still got negative skewness, they can't mark all the questions wrong, they have to ECF it, thankfully.
i did realise that, but it just confuses people when things are over-complicated. if people are stressed, just lay it out straight and they know if their right or wrong, and wont kid themselves that they might be right! soz if i offended, just wanted to clarify, which was why i used your quote, rather that ignoring what u said and making out i was some master of maths!!
so what grades do you people need? which uni's you going to? and which courses? i actually only need BBC for a business economics course at exeter but im striving for my A's, anyway!!
yea i see ur point, the way i explained it was a bit wierd....
yea ur way is beta...
I know I messed up the last question for sure since I forgot to include the 1/3 part. They had to be so evil and make it all fancy. I would have prefered a straightforward p.d.f question where you simply worked out the mean, variance, c.d.f, median, lower and upper quartiles and the IQR. I know how to do all them so despite not having included the 1/3 thing, I hope I can get some method marks. My lower quartile and median seemed a bit higher than what I have been hearing and my upper quartile was over the upper limit. For the skewness question, I went ahead and drew a box-plot! I suggested that it had a negative skew......
I doubt I will get an A in Maths now to go to King's College for Maths. I'm just hoping for a B, even if it's a crap one so that I still have a good chance at clearing. I got 65 on P2 and did find the P3 paper quite hard but I hope that I have got at least a B on the S2 paper with As in my S1 and P1 resits. I also got a B in my D1 last year. At the moment, I think I'm still on target for ABB.
wow a box plot, extravogent. i just used the mean<median<mode thing. tho had loads of time to spare, i did consider drawing the examiner a picture to be nice as i finished in 20 minutes. but decided it would be time better spent looking at the floor or ceiling. i should have done a box plot, i could have coloured it and everything, damn!
I got the same mean and median. Mean of about 1.27 and median of about 1.47. And I put it was negative skew, because it's always negative skew if median>mean as that means that most of the information is towards the right hand side of the graph.
I completley mucked up q3. I forgot how to do hypothesis test for binomial. Really stupid as that's the easiest one to do. I'll at least get method marks, I hope.
DO you think I will as the methods right, but I've put in one wrong number?
For question 6), the one with the carpet, on part d) how come everybody's got the normal approx to be Y~N(17.5,17.5). Me and my friends at school did the approx with lambda as 17.75 since 0.05*355 = 17.75
Is that right?