... necessary. Say I have a data set of every single time ... I have a completely different data set (imagine two columns in ... . In reality, we'd need data points that suggest this relationship.
Hey i accidentally tore my December 2016 scantron a little bit and there was no issue at all. I received my score on the same day as everyone else (in an early wave, too!). You'll be fine.
I honestly did the first couple of lessons using it, as I didn't want to accidentally use a passage that would be explained later on. Plus, you can watch and see where you may have missed something compared to what JY did.