# Function - Linear Regression

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Description:
A Function that returns a linear regression channel using (X,Y) vector points.

Inputs:
_X: Array containing x data points.¹
_Y: Array containing y data points.¹

Note:
¹: _X and _Y size must match.

Outputs:
_predictions: Array with adjusted _Y values at _X.
_max_dev: Max deviation from the mean.
_min_dev: Min deviation from the mean.
_stdev/_sizeX: Average deviation from the mean.

Resources:
https://www.statisticshowto.com/probabil...
https://en.wikipedia.org/wiki/Linear_reg...

## 评论

Thank you for the script. Very helpful.

Just wanted to note, that there are some arrays that don't necessarily start with index 0 (some have values starting at index 2 for example). So when using this function on those arrays, one gets NaN for the outputs. Adding nz() to the arrays in the calculations helps resolve that problem:

_sumXY := _sumXY + (nz(_Xi) * nz(_Yi))
_sumX2 := _sumX2 + pow(nz(_Xi), 2)
_sumY2 := _sumY2 + pow(nz(_Yi), 2)

@marketrading001, thanks, ill update the script, was a oversight in my part :)

Fantastic work. Absolute must have if you play in crypto, I can only speak from experience in that category.

Only question I have... Are alerts possible? I can't find a way to set them, not very tech oriented.

My express gratitude for an outstanding tool.

What’s exactly the function of the extended lines feature? R,b,l,n

Many thanks for your incredible generosity and brilliant work. I've learned a tremendous amount from your scripts.

Hi Ricardo, i'm not sure what to modify in the script so I can change the STDEV of the dashed aqua line. Can you please help me?