Edexcel BIOLOGY Doubts!!!!

[Deadly_king]

Do any of you have any tips for analysing graphs,some tips can I got from here: http://www.thestudentroom.co.uk/showthread.php?p=26347179&highlight=graph
,but if you have anything to add,that would be great.
+rep

I think these can help you.

http://www.saburchill.com/IBbiology/graphs/002.html

http://ezinearticles.com/?The-Biology-Regents---Analyzing-Charts&id=3118001

[Uchia]

anyone knows how to calculate the standard deviation using the calculator

[Amelia]

anyone knows how to calculate the standard deviation using the calculator

umm.... this might help - http://www.stat.ufl.edu/~mmeece/2023/Calculator.htm

[Uchia]

I still didn't get it 

[sasha7amad]

By using the same daphnia which 3 variables would you control?

[Uchia]

age
size
type (gender)

[sasha7amad]

In core practical 8, when u investigate effect of mineral deficiencies on plants, why do you wrap tube with aluminium foil?

[sasha7amad]

my biology teacher told me that I always have to draw line of best fit so no curves, is that true?? wake up and answer me guys =(

[Uchia]

well it depends according to the question

in the markscheme both the line of  best fit and straight line joining all points are acceptable

but still even sometimes a line of best fit might not be sensible since it doesn't pass across most of the points but still it is acceptable

[hissyfit]

Does anyone have a list of what we are supposed to know for the Core Practicals.

Are these correct?

1.Method
2.Control
3.types of organisms used,age,species,sex...
4.repeat experimet,get average(method+why u do it)
5.what u measure+what u do it with
6.variables u are keeping constant
7.Safety precautions
Are the Unit 3B papers any good,for the Unit 1 +2 AS exams?

Thanks +rep

[Weaam]

In the edexcel revision guide, it says they mark accourding to CORMS:
C- Control
O- Organism
R- Repeat
M- Measure
S- Same (variables)

Hopw that helps

[hissyfit]

In the edexcel revision guide, it says they mark accourding to CORMS:
C- Control
O- Organism
R- Repeat
M- Measure
S- Same (variables)

Hopw that helps

Insert Quote
which revision guide is this?

[Weaam]

Its the official edexcel revision guide for biology ...

[hissyfit]

I just saw it ,I have a copy of it.
I had forgotten to read through that part.
Thanks

[Weaam]

I just saw it ,I have a copy of it.
I had forgotten to read through that part.
Thanks

Hahaha ur welcomee