What is the algorithm for finding the tendency to decrease or increase values ​​in an array?

Question

Algorithms

Hello.
There is an array with 1000 sensor measurements.
You need to find a trend to decrease or increase values.
Example:

I thought to find the average and calculate who is more, but because of the "noise" (there is no way to get rid of the noise further) values ​​do not always work.
Please tell me what is the name of the algorithm for finding such a trend? What to google, etc.

Answer 1

Linear Regression