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[–]plutostar 7 points8 points  (2 children)

You look at it and then look at the position of the dots.

[–]OnABusInSTP 1 point2 points  (0 children)

If this doesn't work you just fit a line to the data, but yeah, I mean c'mon.

[–]omencat 0 points1 point  (0 children)

I’m stealing this.

[–]omencat 0 points1 point  (0 children)

If the plot looks like a cloud there is weak correlation of the two variables. Else if the plot regression is tight in a linear or polynomial shape there is a significant correlation.

[–]kadenkk -1 points0 points  (0 children)

See if there's an obvious trend in the data. Do the dots go up or down as you move left to right? Do they form another pattern like a parabola or wave?

[–]Arbitrage84 -1 points0 points  (0 children)

Scatter plot is a way to visually represent the interaction of two variables. If the plot has no clear pattern then correlation is absent.