Paste x,y values and get a scatter plot instantly, complete with a trend line and correlation coefficient.
π Your data never leaves your browser β nothing is uploaded to a server.
Data points: 0
Equation: β
Β· Correlation r: β
(β)
GUIDE
Learn more
01
What format should the pasted data be in?
Enter one numeric pair per line as x,y β for example, 2.1,5.4 β separating the two values with a comma, with each pair on its own line. Both values must be numeric; any row missing a comma or containing a non-numeric value is automatically skipped, and the number of skipped rows is shown on screen.
02
How are the trend line and correlation (r) calculated?
Metric
What it means
How to read it
Trend line
A least-squares line, y = mx + b
Summarizes the overall direction of the data
Correlation r
A value from -1 to 1 describing linear relationship strength
Toggling the trend line draws a dashed line computed with the standard linear regression formulas, alongside the correlation coefficient and a plain-language strength/direction (positive or negative) label.
03
What happens with a lot of data or a wide value range?
The X and Y axes are automatically scaled with a small margin based on the minimum and maximum of your data, so wildly different value ranges still fit neatly on the chart. To keep the browser responsive, there is also a cap on how many pairs are processed at once β if you exceed it, a notice appears on screen.
No. All scatter plot computation and rendering happen entirely in your browser, and the data is never sent anywhere.
How should I interpret the correlation coefficient (r)?
An |r| above 0.7 is considered a strong relationship, 0.3β0.7 is moderate, and below 0.3 is weak. A positive sign means the values tend to rise together; a negative sign means one tends to fall as the other rises.
What happens if I enable the trend line with fewer than 2 data points?
A trend line and correlation coefficient require at least 2 valid data points; with fewer, those figures are simply not shown and only the scattered points appear.