ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: BiG DaN on October 19, 2008, 01:04:10 pm

Title: Core clarification
Post by: BiG DaN on October 19, 2008, 01:04:10 pm

With the 1-varstats calculator thing
do we use Sx or ox?
thanks

also with the equation y=a + bx
B=rSx/Sy
do we use Sx or ox?

Title: Re: Core clarification
Post by: Amnesiac on October 19, 2008, 01:16:53 pm

What's ox? i'm fairly sure its Sx that you use

Title: Re: Core clarification
Post by: BiG DaN on October 19, 2008, 01:22:19 pm

Quote from: Amnesiac on October 19, 2008, 01:16:53 pm

What's ox? i'm fairly sure its Sx that you use

that o is ment to be sigma sign

Title: Re: Core clarification
Post by: Glockmeister on October 19, 2008, 01:24:22 pm

Quote from: Glockmeister on October 19, 2008, 01:25:43 am

I think you would use the Sx when refering to the standard deviation of a sample whilst σx would be the standard deviation of a population.

For the purposes of Further Maths, you would always be refering to samples not population.