ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: kriptik on April 11, 2010, 11:34:30 am

Title: transforming graphs
Post by: kriptik on April 11, 2010, 11:34:30 am

if i wanted to transform a graph and if there are options for it, which one do i have to check for the most suitability, r value or r^2 value?

regards

Title: Re: transforming graphs
Post by: Albeno69 on April 11, 2010, 11:39:14 am

Quote from: kriptik on April 11, 2010, 11:34:30 am

if i wanted to transform a graph and if there are options for it, which one do i have to check for the most suitability, r value or r^2 value?

regards

this explains what to use for witch graphs i put this in my note book i think there a definite to be on a sac and exam.

Title: Re: transforming graphs
Post by: kriptik on April 11, 2010, 11:46:52 am

so do we need to use both r and r^2 values to find the most suitable one?

Title: Re: transforming graphs
Post by: Albeno69 on April 11, 2010, 11:50:48 am

Quote from: kriptik on April 11, 2010, 11:46:52 am

so do we need to use both r and r^2 values to find the most suitable one?

na those picture just tell you witch one are most suitable like you may need to use both to see witch one linierises the data better. it will vary on the data provided.

Title: Re: transforming graphs
Post by: crayolé on April 11, 2010, 11:57:43 am

We use the r^2 value ;]

You have to try each one that suits its shape and see which one gets the highest r^2 value

Title: Re: transforming graphs
Post by: Albeno69 on April 11, 2010, 11:58:45 am

well yea but in a exam i doubt that they would say use x^2 transformation they will ask you witch is best and ext