IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: Aodian on May 08, 2010, 10:19:05 am

Title: Biology Paper 5 help
Post by: Aodian on May 08, 2010, 10:19:05 am

Hey guys, I was hoping if any of you could help me with this question from 07 for bio paper 5. It's just the first question and how to draw the histogram. I'm stumped on it. Though I do know how to draw a histogram I somehow can't get myself around this one. Help please! Thanks!

Title: Re: Biology Paper 5 help
Post by: HOUSE_MUSIC on May 11, 2010, 12:19:59 pm

just look at the marking scheme www.xtremepapers.net

Title: Re: Biology Paper 5 help
Post by: ilmarien on May 11, 2010, 02:48:05 pm

I just did that past paper a few hours ago at school (May/June 2007, right?), and I was also stumped!
I think I have to review my statistics, I've forgotten most of it (that and the fact that I got an E for Maths paper 6, Statistics1).

SOMEONE please HELP!! ???

The mark scheme only says "axes correctly orientated, suitable scale, labels; all plots correct; histogram drawn/plots adjoining;"
Like I understand that!

Title: Re: Biology Paper 5 help
Post by: MaNi_DaDuDe on May 11, 2010, 10:26:05 pm

Hey guys. :)

it's pretty easy.

If you guys want, I can scan and upload my solved version of the question.

Pz

Title: Re: Biology Paper 5 help
Post by: ilmarien on May 12, 2010, 01:57:26 am

Could you please?
I need the solution immediately.
 :)
Lots of thanks, manidude!

Title: Re: Biology Paper 5 help
Post by: MaNi_DaDuDe on May 12, 2010, 05:08:29 pm

Quote from: ilmarien on May 12, 2010, 01:57:26 am

Could you please?
I need the solution immediately.
 :)
Lots of thanks, manidude!

Hey.

Just got access to a computer.

Here you go :D

[EDIT] :: Ignore that lame line I made in the 4th bar, I didn't use a rule as you can see.  :-[

Title: Re: Biology Paper 5 help
Post by: ilmarien on May 13, 2010, 12:21:23 am

Thanks a lot!   ;D

I must thank you if I get a good score for paper 5 Bio.

Title: Re: Biology Paper 5 help
Post by: VIP_93 on May 13, 2010, 07:20:00 am

plz i have a question....
wat's the difference between t test and chi square?? in terms of degrees of freedom and probability??? and wen can we know if there's a significant difference ....and the critical value???
plz i am totally confused
thx in advance....

Title: Re: Biology Paper 5 help
Post by: osmosis on May 13, 2010, 08:54:50 am

VIP_93...i've already answered your question in your post...i hope you understand! :)

Title: Re: Biology Paper 5 help
Post by: persian2845 on May 13, 2010, 10:48:29 am

Hey everyone,

can anyone pls explain why the degrees of freedom are 38 in this paper, question 3 part iv?

thx in advance

Title: Re: Biology Paper 5 help
Post by: MaNi_DaDuDe on May 13, 2010, 11:47:20 am

Quote from: persian2845 on May 13, 2010, 10:48:29 am

Hey everyone,

can anyone pls explain why the degrees of freedom are 38 in this paper, question 3 part iv?

thx in advance

there are two samples. Both have 20 amount.
So degrees of freedom = 20-1 = 19 x 2 = 38

Title: Re: Biology Paper 5 help
Post by: ilmarien on May 14, 2010, 12:02:23 am

Exam in 2 hours!  :o I feel that I'm not yet prepared!

Title: Re: Biology Paper 5 help
Post by: MaNi_DaDuDe on May 14, 2010, 12:08:02 am

Quote from: ilmarien on May 14, 2010, 12:02:23 am

Exam in 2 hours!  :o I feel that I'm not yet prepared!

Awww. Don't worry about it. You'll do brilliant! :)

Just go in there with a clear and relaxed mind. :)

All the best!

Title: Re: Biology Paper 5 help
Post by: Aodian on May 17, 2010, 06:07:22 pm

Thanks so much for the help guys.. I didn't realise anyone actually came to help until after the exams.. But I managed it anyways!
Hope your exams went well, anyways best of luck for the rest!

Title: Re: Biology Paper 5 help
Post by: MaNi_DaDuDe on May 17, 2010, 06:46:46 pm

Quote from: Aodian on May 17, 2010, 06:07:22 pm

Thanks so much for the help guys.. I didn't realise anyone actually came to help until after the exams.. But I managed it anyways!
Hope your exams went well, anyways best of luck for the rest!

You too! :)