i am doin my maths coursework!and dont know how to do box and whisker diagrams. i have done a stem and leaf diagram and now need to put that data in a box and whisker plot. please can you tell me in detail if you can how to do it. i have troubl understanding the upper and lower quartile!please could someone just explain how i can construct one. i would be most greatful.! thanku xXx
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- Thread Starter
- 26-02-2004 19:22
- 27-02-2004 16:44
try this site - http://www.bbc.co.uk/education/asgur...inciples.shtml
it helped my for my statistics coursework
- 29-02-2004 23:33
Box and whisker diagrams- Basically you have a line, with the lowest numebr from the sample at one end and the highest at the other end, then, you mark out the lower quartile, the median, and the upper quartile, on the line, and make it into a box.
- 01-03-2004 00:42
www.mathsnet.net is really good too!
box and whisker.... the middle line is the median and the edges of each sides are the upper and lower quartiles... and then the lines are the ranges.... either way!!!
+ if you want to get extra marks... the lines should stop at +/-1.5(IQR) [depending on significance!]
IQR-interquartile range and the results outside are anomalies!