Hi! I have the data and scatterplot as shown. I fit a line to it.
The fit line looks positive and yields a function of:
y=0.125715x+(84.663831)
However, when I calculate the r squared I get -29.3. This is true if I calculate by hand or using a function.
How do I interpret this result? I agree that the chart looks noisey enough to not have a strong r squared, but the strong trend line is still there.
Is it possible this is a polynomial distribution and my r2 is not fit for this?
The answer was a mistake in my use of the function. I was not using the model's predicted output, and instead reusing the initial data!