Qualification > Math

S1 and S2 DOUBTS HERE!!!!

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~ Miss Relina ~:

--- Quote from: astarmathsandphysics on December 17, 2011, 09:29:30 am ---I know. I don't like the book method - it is technically incorrect. My method is the statistically correct method.

--- End quote ---

ok can plz Sir give me the equations for :
Q1
Q2
Q3 by your method

astarmathsandphysics:
There is no equation but actually a method. I treat a list as continuous and use
1/4 (n+1) for lower quartile
1/2 (n+1) for median
3/4 (n+1) for upper quartile.
If any of these result in a decimal I interpolate as I did for your question.

~ Miss Relina ~:

--- Quote from: astarmathsandphysics on December 17, 2011, 05:53:31 pm ---There is no equation but actually a method. I treat a list as continuous and use
1/4 (n+1) for lower quartile
1/2 (n+1) for median
3/4 (n+1) for upper quartile.
If any of these result in a decimal I interpolate as I did for your question.

--- End quote ---

Thanks alot Sir
 Q1 -the above method can be used for Edexcel too ???
Q2 in the attached pic. it's wrong I'm pretty sure but want to know if you agree  or not ???

Thanks in advance  :D

astarmathsandphysics:
negative skew actually since longer tale on left than right.

~ Miss Relina ~:

--- Quote from: astarmathsandphysics on December 19, 2011, 11:54:35 am ---negative skew actually since longer tale on left than right.

--- End quote ---


hahaha.....Thanks alot

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