Free online statistics plot makers and calculators.
Create a residual plot from paired X/Y data, inspect standardized residuals, review the fitted line, and export charts locally in your browser.
Paste paired X and Y values, one pair per row. The residual plot shows observed value minus predicted value.
PNG, SVG, JPG, and JPEG export run locally.
Enter valid data to calculate results.
Paste two numeric columns and the page fits a simple least-squares regression line. The residual plot then shows each X value against the difference between observed Y and predicted Y.
A residual plot is useful after a fitted line looks plausible. Curved residual patterns can suggest a non-linear relationship, while widening residual spread can suggest changing variance.
The page also shows the fitted equation, slope, intercept, Pearson r, R², RMSE, and a fitted line chart. Use those values together with the residual plot before relying on the line of best fit.
Paste paired X/Y data and create a clean scatter plot.
Build a histogram and frequency table from raw values.
Create a box plot with quartiles, IQR, and Tukey outliers.
Get a trendline equation, Pearson r, R², and residuals.
Calculate Pearson r and R² from paired X/Y values.
Calculate Q1, Q3, interquartile range, and outlier cutoffs.
Find min, Q1, median, Q3, and max from raw values.
Group raw values into bins and create a frequency table.
Yes. Copy two numeric columns from a spreadsheet and paste them into the input area. Tab-separated data is supported.
No. DataToPlot parses, calculates, and renders charts in your browser.
The tool supports commas, spaces, tabs, and new lines for numeric data.
Yes. After the preview renders, export the chart as PNG, SVG, JPG, or JPEG.
The page shows a clear error message with the row where parsing failed.
A residual plot shows each X value against the residual, which is the observed Y value minus the predicted Y value from a fitted model.
For a reasonable linear fit, residuals are often scattered around zero without a clear curve or funnel pattern.
Yes. It shows the fitted line, equation, R², RMSE, residual table, and residual plot.