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  1. R

    A level Biology: Post your doubts here!

    maybe becuase pollen collected from same plant not two different plants. and its discontinous because its collected after the day is over not continously during the day. So thats why maybe its discontinous data. I need confirmation though.
  2. R

    Physics paper 5 notes?

    use the formula y=mx+c . c is y-intercept. first use the gradient and x and y values f best fit line gradient. Then do it with the worst fit line gradient. The y intercept of the best fit line gradient is the answer and the error will be the difference between the 2 y intercepts.
  3. R

    A level Biology: Post your doubts here!

    how do we write in a sentence that for reliability we write that we are replicating the values at least 3 times and calculate mean. Can somebdy tell me the proper sentence we should use in all questions of outlining procedures that tells about this statement. Plzz help
  4. R

    A level Biology: Post your doubts here!

    can anybody give an example of discontinous data and continous data where the chi squared test and t test is applied respectively?
  5. R

    A level Biology: Post your doubts here!

    qp: papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Biology (9700)/9700_s10_qp_51.pdf i wanted to know the answer to 1c(iii) and (iv) that if we are comparing two means like we are comparing two means of stomata number then we will use t test to compare the two means, so is...
  6. R

    A level Biology: Post your doubts here!

    thanku they are helpful
  7. R

    A level Biology: Post your doubts here!

    hey are there any notes for biology paper 5. im finding it quite hard
  8. R

    Physics P5 in 5 minutes !!!

    i didnt quite understand what u said about why take a chance. If a constant variable im writing if i draw it in the diagram as to how to control it, it will be better for me or not? or should i write it in the paragraph only. if i draw in the diagram i wont lose marks even if its wrong?
  9. R

    Physics P5 in 5 minutes !!!

    Ok but if i do write the reason then will i get negative marks for it and if i draw the water bath in the diagram will they deduct a mark for it or ignore it?
  10. R

    Physics paper 5 notes?

    In the second error bar u posted which is blue u showed that it was a little small than the red error bar. So if our worst fit line is opposite that is from the bottom part of the top error bar to the top part of the bottom error bar then the value of error bar will remain same right in both cases?
  11. R

    Physics P5 in 5 minutes !!!

    in the oil question i wrote that temperature has to be controlled as well, so should i write it is to be controlled by using a thermostatically controlled water bath and draw the water bath in which the container of oil is kept. Cause in additional details it says that 1 mark for writing an...
  12. R

    Physics P5 in 5 minutes !!!

    can additional details be at last part of the answer after the analysis has been written about plotting of the graph. If we write them at the last or include them in the analysis or method of data collection they will still be counted right as additional details and marks will be given for those...
  13. R

    Physics P5 in 5 minutes !!!

    wow this is awesome diagram. Can u also tell me about the use of fudicial markers and when to talk about them in questions. Cause i dont mention them in some questions but in mark scheme they are written and marks get deducted. Thanku :)
  14. R

    Physics P5 in 5 minutes !!!

    hey i dont get why they have kept current as the controlled variable as well. Like how will current vary emf. Isnt emf= BAN/T. So why did they also keep current constant. This is the problem im having with magnetic field questions.
  15. R

    Physics P5 in 5 minutes !!!

    yeah i have problem understanding what are light gates and when to use them in experiments. And can u also explain about the electromagnet switch u were talking abt?
  16. R

    Physics P5 in 5 minutes !!!

    ok same as me. Hey can u check if my answer to qs 1 is correct that i posted on the top thanku.
  17. R

    Solved physics Paper 5??

    can u check the answer i posted above too plzz
  18. R

    Solved physics Paper 5??

    Guys this is an answer to qs 1 of j07. I want to know the correct way of writing the answer. I have posted my answer to question 1 below. If there are any problems with my answer please tell me so that i can correct my answer. Thanku in advance. In this experiment the independent variable is r...
  19. R

    Physics P5 in 5 minutes !!!

    Guys this is an answer to qs 1 of j07. I want to know the correct way of writing the answer. I have posted my answer to question 1 below. If there are any problems with my answer please tell me so that i can correct my answer. Thanku in advance. In this experiment the independent variable is...
  20. R

    Physics P5 in 5 minutes !!!

    hey guys just wanted to clear my doubts about plotting. in qs 2 of s07 when we calculate values of l2, i am having doubts in placing the points. for e.g the value of l2 (484) im plotting between the 480 and 490 points that is in half a square. So will my points be accepted or should i plot it in...
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