ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: cindyy on February 28, 2010, 10:01:23 pm

Title: Parallel box plots.
Post by: cindyy on February 28, 2010, 10:01:23 pm
What are some ways of deducing the presence of a relationship in a parallel box plot?

I know you look at the median, IQR, Rang and shapes, but the essential book doesnt explain how they should look like in order for a relationship to be present.
Title: Re: Parallel box plots.
Post by: Albeno69 on March 01, 2010, 06:50:34 pm
Quote from: cindyy on February 28, 2010, 10:01:23 pm
deducing
whats this?
Title: Re: Parallel box plots.
Post by: Gloamglozer on March 02, 2010, 03:56:21 pm
Quote from: cindyy on February 28, 2010, 10:01:23 pm
What are some ways of deducing the presence of a relationship in a parallel box plot?

I know you look at the median, IQR, Rang and shapes, but the essential book doesnt explain how they should look like in order for a relationship to be present.

With boxplots, there's:

1.  The distribution (page 46 in the non TIN/CP version of Essentials)
2.  Whether or not it has outliers.
3.  The five-number summary (Minimum, Q1, Median, Q3 & Maximum). 
4.  Then there's the spread, as measured by both the range and the IQR. 

That's all you need to include in your "report" when comparing two boxplots.

Is that what you're after?
Title: Re: Parallel box plots.
Post by: crayolé on March 02, 2010, 05:31:16 pm
Basically, If theres a change in outliers, median, range or IQR there is a said relationship between the variables.