The Edexcel S1 (18/05/12 - AM) Revision Thread

^ @ stuck18 i agree the January c3 the last question was horrible that's where i lost all my marks otherwise I would have gotten and A. I hope our stats exam isn't too bad but i'm getting really scared now just thinking about it and time is just going by SO SLOW i wish it would be Friday already so we can get this over and done with.

Time to do all the pastpapers

Have about 14 to do over 3 days

Aghh

I didn't take the C3 jan 2012 exam, but i just tried the last question, it wasn't so tough as you people are saying.

Which part of it did you felt was tough?

I was able to solve the last question in around 5 minutes.

it wasn't hard it was just i didnt learn the proofs of how to prove tan(a+b) so i was screwed then i panicked because i couldnt prove it so i ended up losing all of my marks on that page.

Lol man it's not possible. I did all the past papers within a 3 - 5 days a few weeks ago, and it was actually complete overkill, especially when you stay up at night and do it. I made mistakes like pressing the wrong numbers on the calculator which completly ****ed up my answers to those sxx syy, standard deviation, other equations etc, since i did it at night when i was tired (even when you try to tell yourself do everything properly, it just doesn't happen!). If i were you, as a confidence building process you should do some of the older s1 papers like in 2005 - 2006 and then try the very recent papers from january 2010 onwards (the recent ones seem to get much tougher compared to the earlier ones). It doesn't matter if you havent literally done all the papers, time isn't on your side, but what you could do is just look at all the QPs online and mark schemes of those you haven't done, so basically you can ''expose'' yourself to what the examiners expect.

hope this helps and good luck with the exam

Say you are drawing a box plot

Lowest value =5 and Highest value= 92

Any values below 8 or above 100 are outliers
When drawing this boxplot the left whisker would be at 8 with a cross at 5

When drawing the right whisker would you put the whisker at 92 or at 100?

Omg what is the best way to learn normal distribution the harder questions??? im so going suicidal over them type of questions

I think it's a double whisker; i've seen that in one of the past paper mark scheme for this kind of question.

It is OK. You just need to think of the normal distribution as a giant penis. The rest will come naturally.

its hard to relax cos I know this is my last chance at this module *sigh* . yes I no that.. it affected me last summers s1 exam

Does coding ONLY affect standard deviation, but not sxx, sxy, syy and pmc. Like is this correct?

Coding affects mean and SD

Doesn't affect PMC

not so sure about whether it affects Sxx Syy Sxy

does anyone know a good way to revise probability, I`m finding it really hard :/
Thanks