Help with Venn diagrams

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Four things that unis think matter more than league tables 08-12-2016
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    Someone please help me complete the Venn diagram with the data that I have been given
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    (Original post by JackT2000)
    Someone please help me complete the Venn diagram with the data that I have been given
    Here's the question
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    When it says 32 bought a drink, that includes the 11 that bought both, so you need to take 11 from 32
    so 21 only bought drinks
    you need to do the same with the popcorn
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    (Original post by CrystalSalvatore)
    When it says 32 bought a drink, that includes the 11 that bought both, so you need to take 11 from 32
    so 21 only bought drinks
    you need to do the same with the popcorn
    I don't understand what you mean sorry
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    (Original post by JackT2000)
    I don't understand what you mean sorry
    The question says 11 people bought both popcorn and a drink that's where you start, which you got right as you but it in the intersection of the diagram
    next to you know 32 people bought a drink, 11 of those are already accounted for as they are in the middle of the diagram ( 11 out of the 32 bought a drink too but they still count as buying a drink)
    as 11 are accounted for you need to find the remaining number of people who bought a drinkso you need to do 32-11 which is 21 that means 21 bought only a drink
    and you do the same with popcorn
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    (Original post by CrystalSalvatore)
    The question says 11 people bought both popcorn and a drink that's where you start, which you got right as you but it in the intersection of the diagram
    next to you know 32 people bought a drink, 11 of those are already accounted for as they are in the middle of the diagram ( 11 out of the 32 bought a drink too but they still count as buying a drink)
    as 11 are accounted for you need to find the remaining number of people who bought a drinkso you need to do 32-11 which is 21 that means 21 bought only a drink
    and you do the same with popcorn
    Is it all right now?

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    (Original post by JackT2000)
    Is it all right now?

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    36-11 is 25 not 24, apart from that is should be right
    and if you add everything together it should add the the total number of people surveyed
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    Are you in the top sit of your school? to be honest, this is super easy.
    it just a easy peasy probability question.
 
 
 
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