I'm not 100% confident I understand how batsd works, but it looks like this will find the slope of the points among themselves for a given timestamp...i.e. if I have values:
```
[230, 210, 200]
```
and I calculate the slope of that array, I will get the coefficient of a linear equation that fits closest to the points `[(0, 230), (1, 210), (2, 200)]`, but I don't see how that is relevant in the context of a single timestamp. Instead, wouldn't this have to use the neighboring timestamps to calculate a slope? I'm not sure...math is hard