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Math Help - Quartiles of data

  1. #1
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    Quartiles of data

    Patient.....A......B.......C.....D.......E......F. .....G......H......I.......J.......K......L
    x............160...390...169...175...125...420...1 71...250...210...258...186...243

    Find the median, upper and lower quartiles of these data.


    I got Q1=172 Q2=198 Q3=254
    but the answers I was given say Q1=170 Q2=189 Q3=254

    Maybe I did the wrong calculations, but am now confused. Are the answers correct?
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  2. #2
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    Quote Originally Posted by greghunter View Post
    Patient.....A......B.......C.....D.......E......F. .....G......H......I.......J.......K......L
    x............160...390...169...175...125...420...1 71...250...210...258...186...243

    Find the median, upper and lower quartiles of these data.


    I got Q1=172 Q2=198 Q3=254
    but the answers I was given say Q1=170 Q2=189 Q3=254

    Maybe I did the wrong calculations, but am now confused. Are the answers correct?
    The correct answers are Q1 = 170, Q2 = 198, Q3 = 254.
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