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Author Topic: Edexcel BIOLOGY Doubts!!!!  (Read 133212 times)

Offline mayisha

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #375 on: April 28, 2011, 04:40:01 am »
what exactly does the 95 percent confidence level tell u about the data ? n why is it used ?
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Offline Hermione Granger

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #376 on: April 29, 2011, 07:35:25 pm »
Quote from: mayisha on April 28, 2011, 04:27:31 am
Can sum1 plz explain the t-tests and confidence levels ? or suggest a book where its explained wel but not 2 detailed ... just wats needed for unit 6 bio ...
t-tests are usually sum statistical tests carried out to check the relationship between variables and the validity of an experiment...now in u6 xmz...usually, theyl giv u the value of the experimental t-value, and a table comprsing of t-values for the experiment. all u hav 2 do is check d value of t correspondin to 0.05 value. if ur t-valu z greater or equal to this value...dat means dat u hav a 95% confidence that the experimental t-value is significant. and the null hypothesis is rejected! so then u can accept da relationship shwn by the experimnt.
gt it!!!??
newa.Take care.B.O.L!

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Offline Neimal

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #377 on: May 01, 2011, 10:58:30 am »
stem cells
why adult animal cells usually do not develop into complete organisms, but plant tissues do?

how do we calculate the percentage of the cell cycle time spent in G1(interphase: stage1) using a graph?
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Offline Assi1993

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #378 on: May 03, 2011, 11:37:24 pm »
hello guys!!
i want to kNow..that for A2 Bio Unit 6 exam..will I need 2 revise all AS practicals again?:(
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Offline guMnam

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #379 on: May 05, 2011, 01:19:55 pm »
yes ^
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Offline Assi1993

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #380 on: May 05, 2011, 03:22:58 pm »
ahAn- that sucks u knw :(
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Offline guMnam

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #381 on: May 06, 2011, 07:45:18 pm »
yes i noe.. By the way where r u studying from for.. unit 3&6
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Offline Assi1993

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #382 on: May 07, 2011, 12:03:44 am »
well from the notes school provided!!and those few pastpapers..
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Offline MKh

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #383 on: May 07, 2011, 01:28:03 pm »
wut notes?? i haven't any...can u plz share?? Thanks...
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Offline guMnam

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #384 on: May 08, 2011, 07:12:24 am »
exactly ^ i dont have any material to study frm for practicals.. =/ all i have is pastpapers and marking schemes -.-
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Offline Assi1993

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #385 on: May 08, 2011, 11:11:14 am »
guys..my school gave me salters nuffield advanced biology practical notes....
dont u know about them???
i dont have a scanner...but..
i ll still TRYY to get it uploaded for u..insha Allah
and will tell if i do..


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Offline guMnam

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #386 on: May 08, 2011, 12:04:04 pm »
plzz do tht.. Thanks
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Offline Assi1993

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #387 on: May 08, 2011, 05:52:36 pm »
i have exactly these notes

which thanks to amii that she uploaded :)

http://www.mediafire.com/?k362jo55hwseq3h
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Offline guMnam

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #388 on: May 08, 2011, 08:37:39 pm »
yea i got them ...Thanks to mom(ammii) :P
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Offline ~ Miss Relina ~

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Re: Edexcel BIOLOGY Doubts!!!!
« Reply #389 on: May 09, 2011, 03:33:49 pm »
hello
need any resources plz very soooooon for the research type question which csme throughout the recent pastpapers as i donot have good skills in that plz help as exmas are soon if u ahve any notes websites anything cooperate with it even an advice
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