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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: vidang on April 12, 2010, 07:07:10 pm

Title: Core Question - Centre
Post by: vidang on April 12, 2010, 07:07:10 pm
what is a better measure of centre? median or mean? and why? :\
Title: Re: Core Question - Centre
Post by: vexx on April 12, 2010, 07:50:42 pm
Quote from: vidang on April 12, 2010, 07:07:10 pm
what is a better measure of centre? median or mean? and why? :\

if there are outliers: median as mean is affected by them.
if there are no outliers: mean as it is generally easier to do and more familiar.
Title: Re: Core Question - Centre
Post by: vidang on April 12, 2010, 08:37:01 pm
in my case, its has outliers? so it would median would be a better measure of the centre right?
Title: Re: Core Question - Centre
Post by: vexx on April 12, 2010, 08:42:47 pm
Quote from: vidang on April 12, 2010, 08:37:01 pm
in my case, its has outliers? so it would median would be a better measure of the centre right?

yep.