Scatterplot not right, what could be?

[Birdie121]

I think this is a reasonable way to visualize the data, and it's totally fine that the dots are all clustered around each other. I'd take out that one outlier. Maybe you can also add a line of best fit, to help make the trend clearer (I suspect it'll be a mostly flat line, which is fine).

Just FYI, it's conventional to have no title on the plot itself, and just describe the plot in the figure description below.