Qualification > Math

S1 and S2 DOUBTS HERE!!!!

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astarmathsandphysics:
They are wrong. Phone them and tell them.

~ Miss Relina ~:

--- Quote from: astarmathsandphysics on December 16, 2011, 08:53:23 am ---They are wrong. Phone them and tell them.

--- End quote ---

Actually if I do have their number I would do  immediately  ;)


here is other question which I want to be sure about it

why the Q3 is not 34 only

astarmathsandphysics:
They have done it the way I would do it.
Note that if you have 3 number 1,5,7 the middle is the second, the middle of the first and third one (1+3)/2=2
There are 30 numbers so 3/4(1+30)=23.25
34 is the 23rd one but I want the 23.25th one so go 1/4 of the way from 34 to 36 which is 1/2 then add it to 34.

~ Miss Relina ~:

--- Quote from: astarmathsandphysics on December 16, 2011, 10:09:24 am ---They have done it the way I would do it.
Note that if you have 3 number 1,5,7 the middle is the second, the middle of the first and third one (1+3)/2=2
There are 30 numbers so 3/4(1+30)=23.25
34 is the 23rd one but I want the 23.25th one so go 1/4 of the way from 34 to 36 which is 1/2 then add it to 34.

--- End quote ---

then how the Q1 was 19 ???

Sir is that method above known ??? I mean in my S1 book they never taught us about this method just find 75% of the no. then if it is not a whole no. then round up and find the corresponding term


 :-X

astarmathsandphysics:
I know. I don't like the book method - it is technically incorrect. My method is the statistically correct method.

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