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  1. SB29597

    A2 Maths paper 3

    It wasnt. :( Did you find it easy?
  2. SB29597

    anyone taking the new english language exam?

    I have a pdf version of this and it's completely useless.
  3. SB29597

    A level psychology

    Absolutely :) Ask away. Also: I just created this thread, so maybe something helpful might come up there as well: https://www.xtremepapers.com/community/threads/as-psychology-doubts-tips-guesses-and-leaks.33502/
  4. SB29597

    AS Psychology- Doubts, Tips, Guesses and Leaks

    Hey guys. Post AS Level Psychology Doubts tips and guesses over here. Leaks, if anyone has any ;) Good Luck!
  5. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    I asked people to post anything like that over here. And why not, it's only a guess. I also asked for leaks separately. There were a few people last year who had some, unfortunately, nothing substantial has come up till now.:)
  6. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    What I can gather is that they'll accept it if you use the standard deviation as the error. It technically is precisely that.
  7. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    Heres a basic idea: You take a stem, cut a section to show that no coloring or pigmentation exists. Then you mix dye in the water- preferably something like red or dark blue and let the samples be in water for 5, 10, 15, 20 min. Take three samples per time. Find mean for all. You will be...
  8. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    winter or summer? Link me?
  9. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    Oh yes. I forgot to mention that. My bad. +- 2S :D
  10. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    I assume you are asking about dilution. This can be asked in two ways:- We may be provided with a stock solution, and we have to dilute it. I'm going to take an example. Say we have 1% standard solution. And we need appx 10 cm3 of each diluted solution So, 0.2%- 2 cm3 of sol + 8 cm3 of...
  11. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    There's no need to, if you mention the right stuff, but it's always best to. CIE marking is crazy, and one really should not take risks. It also makes more sense to write that.
  12. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    Write 8- 10 out of these: Independent variable Dependent variable Standardizing variable Dilution table Procedure- in detail, at least 4 to 5 points Control Precautions/ Safety Minimizing error
  13. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    NaOH or KOH is good. :)
  14. SB29597

    So much going on!

    So much going on!
  15. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    For that, you need to find the standard error, given by standard deviation/ sq root of number of measurements. Plot that value as a bar over the main bar or point- try googling around for images- you'll immediately understand when you read this explanation with a picture.
  16. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    The T test is used to assess whether the means of data with normal distribution ( I really hope you take stat, otherwise you'll need to know a few basics of normal distribution) are significantly different. There is a formula given t= (mean of sample 1- mean of sample 2)/ {(SD of sample 1/ no of...
  17. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    Basically, an error bar is a graphical representation of the scope of error in the readings or the standard deviation. If you have two or more sets of data, and the error bars that you draw for the values at any point overlap, then it means that the difference between the two groups is not...
  18. SB29597

    Biology P5 Doubts, Guess Papers, Important Concepts and Leaks.

    A Level Biology P5 Doubts, Guess Papers, Important Concepts and Leaks. Post them all here! If you think anything is really important, cant figure something out, have a gut feeling about a concept being asked or have a useful friend- comment!
  19. SB29597

    Pls give me a sample commentary of English 9093

    No one knows, really, but we are expected to use previous knowledge. That doesnt make sense because we have no reference material.
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