Groovedude Posted November 23, 2003 Share Posted November 23, 2003 as you can tell from the title i need some help. i have forgotten how to work out. (Upper Quartile - Lower Quartile) Could some one please jog my memory ;) Link to comment Share on other sites More sharing options...
Toxikk Veteran Posted November 23, 2003 Veteran Share Posted November 23, 2003 sup groovedude... sorry i suck at math, just wanted to holla at you cuz i hadnt in a while. Link to comment Share on other sites More sharing options...
bach_m Posted November 23, 2003 Share Posted November 23, 2003 is this for grouped or ungrouped data? for ungrouped: Mean is the halfway, so if u have 11 numbers, its the 6th. then LQ is half of 6, so 3rd number in ther series,, and upper quartile is 3+6, so 9th nuber in the series Link to comment Share on other sites More sharing options...
[jon] Posted November 23, 2003 Share Posted November 23, 2003 theres also the interquartile range which = upper quartile - lower quartile Link to comment Share on other sites More sharing options...
tangoman444 Posted November 23, 2003 Share Posted November 23, 2003 from what i can remember, isnt upper quartile = 3/4 of the info ur given and lwer quartile = 1/4 of the way thru? o well i cant really explain it very well but hey i got an a* for maths gcse :) so i'm happy heh heh Link to comment Share on other sites More sharing options...
caustiK Posted November 23, 2003 Share Posted November 23, 2003 we need a math help forum ;) Link to comment Share on other sites More sharing options...
Banjo Posted November 23, 2003 Share Posted November 23, 2003 1 2 34 5 67 8 910 11 12 Blue = 1st quartile Red = 2nd quartile Purple = Third quartile Green = 4th quartile Upper would probably be the third and fourth while lower would be first and second. Mean is actually average, median is the one in the middle and mode is the most frequently occuring one.Up Link to comment Share on other sites More sharing options...
Banjo Posted November 23, 2003 Share Posted November 23, 2003 Ack, double post... board kept timing out when I was posting. Link to comment Share on other sites More sharing options...
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