- #1
matthyaouw
Gold Member
- 1,125
- 5
Im having some trouble with this, and I was hoping someone could help me.
I have a data set from which I've determined the \widehat{a} and \widehat{b} values and determined where the line of best fit should go using linear regression. The next thing I have to do is work out the varience using this equation:
\underline{\sum(y-\widehat{y})^2}<br /> \\n-2
(edit) Sorry, first time using latex, and I can't access the tutorials for some reason.
I've typed :
"\underline{\sum(y-\widehat{y})^2}
\\n-2"
But I'm not getting a new line after ^2}. How do I do this? (/edit)
I'm a bit unsure what to do here. Does that mean that I have to sum up all of my y values, and take away the expected y values that are predicted on my line of best fit which correspond to the actual values I've entered?
I have a data set from which I've determined the \widehat{a} and \widehat{b} values and determined where the line of best fit should go using linear regression. The next thing I have to do is work out the varience using this equation:
\underline{\sum(y-\widehat{y})^2}<br /> \\n-2
(edit) Sorry, first time using latex, and I can't access the tutorials for some reason.
I've typed :
"\underline{\sum(y-\widehat{y})^2}
\\n-2"
But I'm not getting a new line after ^2}. How do I do this? (/edit)
I'm a bit unsure what to do here. Does that mean that I have to sum up all of my y values, and take away the expected y values that are predicted on my line of best fit which correspond to the actual values I've entered?
Last edited:
