• Stages in the experiment
  • So, how many sorts do we need About four different ones Q26
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    paper might be better 
    Q26
    as they’ll be doing it straight after they wake 
    up … in fact while they’re still half-asleep.
    LUKE: 
    Right. And we’ll have to check the ethical guidelines 
    Q27
    for this sort of research.
    SUSIE:
    Mm,
    because our experiment involves humans, so there are special regulations.
    LUKE:
    Yes, I had a look at those for another assignment I did. There’s a whole section on risk
    assessment, and another section on
    making sure they aren’t put under any unnecessary 
    stress. 
    Q28
    SUSIE: 
    Let’s hope they don’t have any bad dreams!
    LUKE: Yeah.
    SUSIE: 
    Then when we’ve collected all our data we have to analyse it and calculate the correlation 
    between our two variables, that’s time sleeping and number of dreams and then
    present 
    our results visually in a graph. 
    Q29
    LUKE:
    Right. And the final thing is to think about
    our research and evaluate it 
    Q30
    . So that seems 
    quite straightforward.
    SUSIE: 
    Yeah. So now let’s …

    TEST
    Stages in the experiment
    EMMA:
    Anyway, shall we have a look at the procedure for our experiment? We’ll need to get going
    with it quite soon.
    JACK:
    Right. So the first thing we have to do is find our seeds. I think vegetable seeds would be
    best. And obviously they mustn’t all be the same size.
    So, how many sorts do we need? 
    About four different ones? 
    Q26
    EMMA: 
    I think that would be enough. There’ll be quite a large number of seeds for each one.
    JACK: 
    Then, for each seed we need to find out how much it weighs 
    Q27
    , and also measure
    its dimensions, and we need to keep a careful record of all that.
    EMMA: 
    That’ll be quite time-consuming. 

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