Recent content by fbsthreads

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    Spearman's Rank Correlation Coefficient

    This is the equation for the Rank Correlation Coefficient: 1- \frac {6 \sum d^2} {n(n^2-1)} can anyone explain the 6? why a six? i don't see the link.
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    Can Water Become Magnetized on a Magnet?

    i know you can ionize water to make it magnetic, but some people claim if you put a glass of normal water on a magnet (so the water is in a magnetic field) it will become magnetized in a few minutes. my guess would be that water particles are too free to become magnetically aligned, and so it...
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    Solve Quadratic Equation: y^2 - 12y + 32 = 0

    thanks people. it was the bit i have highlighted in bold that i had forgotten about when trying to work it out. y^2 + (a+b)y + ab thanks again.
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    Solve Quadratic Equation: y^2 - 12y + 32 = 0

    in a maths book i have there is an example of solving a quadratic. part of the process reads: y^2 - 12y + 32 = 0 implies that (y-8) (y-4) = 0 i don't understand how this second equation was reached based on the first one. could someone add in the steps that gets me from...
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    A conditional probability question

    the answer is given in the answers section at the back, it is not in with the question.
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    A conditional probability question

    it definatly says "how many students are expected to pass maths and english?" and the only answer given is 7. that is only part A of the question though, part B is; "show that these two events are not independent"
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    A conditional probability question

    In a class of 15 students, 10 are expected to pass maths and 12 are expected to pass english. how many students are expected to pass maths and english? ----- the answer given in the book is 7. i don't understand how this answer was reached. could someone please show me how to calculate...
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    Create or die (a 3 months team mission)

    if you or anyone else can figure out a new system of maths, then what is to stop terrorists from developing their own system of maths such as the one we have now and use it to there own advantage. YOU have questioned current maths and want to replace it, but that is just killing the king to...
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    Create or die (a 3 months team mission)

    Moral Maths: 1+1 = 2 (if your good) or 1 (if your bad so that you don’t gain anything) The internal angles of a Euclidean triangle add up to 180 degrees if you are philanthropic, if you are a bit of a fascist though, they equal 360, so that your weapons backfire on you. Energy is equal...
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    Create or die (a 3 months team mission)

    math doesn't lead to n of L. the proof of that is that we still have L and have never experienced an utter n. although i don't deny that n is possible, it will not be caused by logic, maths or science, it will be caused by an abuse of these things that maths does not govern. on a...
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    Create or die (a 3 months team mission)

    if n is going to end L, then what system of mathematics was used to calculate that finite number, and can't we use that mathematical system if it works. And if the current system doesn't work then we aren't going to die in three months and we don't need to invent a new system. YAY, we win...
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    Does the type of matter a neutrino passes through affect its flavor probability?

    What do people think of the idea that the type of matter a neutrino passes through can affect it's probability of being a certain flavour/colour. eg, through rock it is more likley to be one colour, through air it is more likley to be another colour.
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    Einstein had 6 papers Published in 1905.

    i found what i was looking for: from: http://www.einstein-bern.ch/index.php?lang=en&show=bern
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    Einstein had 6 papers Published in 1905.

    what were they all?
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    How do gravitons behave in relation to general relativity?

    It must be wrong to think of gravitons like air molecules that have the free space to move in any direction, because if a wave of gravitons could move side to side, they could effectively ‘miss’ attracting some small particles. So they must behave like a complete solid wall of particles. But...
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