Physics Experiment Linear Regression Issue

[tsumi]

Homework Statement

Hello, I have done a laboratorial experiment (electron diffraction) and I've been doing the analysis of the obtained data.

I have plotted the data obtained experimentally, and the slope of the obtained linear regression should give a certain value.

What's happening is that the slope of the linear regression gives a value inferior to any of the individually calculated values, is this normal? and this value is quite different from the theoretically expected one, while all the individual values are much closer to the expected one. This is my only question.

Thank you for your attention

Homework Equations

The Attempt at a Solution

 

[member 553083]

It is possible that the linear regression line does not accurately depict the data points, since it is designed to fit the data in a way that minimizes the sum of the squares of the vertical distances between the points and the regression line. It could be that the points are not well-suited for a linear regression, or that there is an underlying trend that is not being properly captured by the linear regression. Additionally, it is possible that the linear regression is giving an accurate representation of the data, but that the individual values are not. You may want to consider other forms of analysis, such as non-linear regression or a logarithmic fit.