In this problem, I need to rearrange the equation to solve for the variable of interest which is TSS.

I have been given the following values to use to solve the problem:

RSS = 246.68

R2 = 0.78

However, when I try to rearrange the equation I think I am doing something wrong but I am not sure what exactly.

This is the equation: I am trying to rearrange:

[tex]R^2 = 1-\binom{RSS}{TSS}[/tex]

I know the value of TSS should be ~ 1227.78, but I just cannot get this result when I try to rearrange the equation.

To see where I may be going wrong, please see the screenshot of my whiteboard below:

https://i.stack.imgur.com/VN9pD.png

Thank you in advance for your help.