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Geog4a help?

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    So basically i have just come to start revising for the geog 4a exam next Tuesday and have no resources to actually revise from for the second part of the exam, the skills ( All i have is my text book which is the phillip Allen aqa a2, which only shows chi squared and Mann Whitney U, the additionals needed for the a2. My class never really went over much.

    I am happy with the fieldwork side to the exam, but i was just wondering if someone wouldnt mind sharing me their notes or resources? Or even if someone could just tell me what i need to research and learn? ((
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    Is your exam on sustainability?
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    This is what I am needing too mate, especially on the Mann-Whitney U and Chi-Squared!
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    Guys, mann whitney is simple really. It's not come up so I advise you look this up and learn how to do it.
    There are some basic steps to mann whitney.
    First you put data in to 2 columns e.g if you're looking at rainfall in two months and you take 6 readings in each month then do two columns for January and June (just for example). Then put in data from readings under each column. Rank each column lowest first BUT remember to rank both columns together. This means, don't do separate ranks for Jan and one for June. Combine them. If the data is as follows:

    Jan Jun
    200 80
    300 200
    150 170
    400 100
    450 70
    310 60

    Then you know that 60 is the lowest so that gets rank 1, then 70 gets rank 2, then 80 gets rank 3, then 100 gets rank 4, then you use 150 for rank 5 even though it's under Jan. So you go on like this...
    Then once you've ranked them, you need to add up your ranks for each column..once this is done use the Mann whitney formula to input the figures. n1 and n2 are the sample sizes so basically 6 for Jan and 6 for Jun.
    Hope this helps and please feel free to pass this on.
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    (Original post by popnit)
    Guys, mann whitney is simple really. It's not come up so I advise you look this up and learn how to do it.
    There are some basic steps to mann whitney.
    First you put data in to 2 columns e.g if you're looking at rainfall in two months and you take 6 readings in each month then do two columns for January and June (just for example). Then put in data from readings under each column. Rank each column lowest first BUT remember to rank both columns together. This means, don't do separate ranks for Jan and one for June. Combine them. If the data is as follows:

    Jan Jun
    200 80
    300 200
    150 170
    400 100
    450 70
    310 60

    Then you know that 60 is the lowest so that gets rank 1, then 70 gets rank 2, then 80 gets rank 3, then 100 gets rank 4, then you use 150 for rank 5 even though it's under Jan. So you go on like this...
    Then once you've ranked them, you need to add up your ranks for each column..once this is done use the Mann whitney formula to input the figures. n1 and n2 are the sample sizes so basically 6 for Jan and 6 for Jun.
    Hope this helps and please feel free to pass this on.
    Thank you so much!! Mann Whitney came up
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    That exam was great!

Updated: June 19, 2012
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