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    Hi, I am doing my practise coursework and I need help with the sample size:

    1) Is there a simple formula I can use to decide on a sample size?
    2) If not, what is a suitable sample size for 200 pieces of data?

    Thanks
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    Use as many as seems appropriate, personally I would use 40 pieces of data, if not all of them.
    there isn't a formula for it though
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    (Original post by an_atheist)
    Use as many as seems appropriate, personally I would use 40 pieces of data, if not all of them.
    there isn't a formula for it though
    Ok I shall use 40. Thank you.
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    You could use Slovins Formula to work out the sample size
 
 
 
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