Dot plot and scatter plot maker
Create a one-variable dot plot or add Y values to inspect a scatter plot, correlation and regression line.
Dot plot — one dot per observation
Scroll inside the chart when needed. For very close values, use the exact frequency table below.
X/Y scatter plot and trend
When Y is supplied, points show observation pairs and the line shows linear regression.
Calculation details
| Value | Frequency |
|---|---|
| Fill in the fields above — the result is computed on this page. | |
How do I use this page?
- Paste the X series.
- Optionally paste its matching Y series.
- Calculate and inspect frequencies or the paired plot, r, R² and trend.
What this page does not do: Up to 200 observations. X and Y must have equal length and nonzero variation. Correlation does not establish causation.
Further reading
Theory — how does a dot plot differ from a scatter plot?
In a dot plot, each dot represents one observation along the X axis, and repeated values stack on top of each other. Once you add a Y series of the same length, the tool pairs the values as (X, Y), draws a scatter plot with a least-squares line, and the correlation coefficient r describes the strength of the linear relationship. Without a Y series, the calculator stays a simple single-variable dot plot.
Frequently asked questions
When is the scatter plot shown?
Does high correlation imply causation?
See also
Ancient Egyptian units converter
Convert length, area, volume and mass both ways. A 0.525 m cubit, 4.8 L hekat and 91 g deben model; khar varia
Arithmetic Mean
Enter numbers separated by commas and calculate the arithmetic mean online. The calculator will give you the s
Basic calculator
Add, subtract, multiply and divide with parentheses and percentages.