[ayhanfuat]

No, bad analysis caused it. Graphs are at best secondary tools to interpret findings. You don't use graphs to draw conclusions.

[SubiculumCode]

But we do use plots to help identify problems in datasets, like all the time. Statistics 101

[ayhanfuat]

That's exploratory analysis. You don't use exploratory analysis as-is to draw conclusions. It guides you through your research but you do support it with other tools (statistical, logical). Science 101.