Scatter Plot Generator - Create XY Charts Online

Enter Data Points

Your Scatter Plot

How to Use This Tool

Creating a scatter plot to visualize relationships between two variables is simple:

1. Enter your data — Input X and Y values for each data point. Add more points as needed.
2. Quick import — For bulk data, use the Quick Import feature to paste comma-separated X,Y pairs.
3. Customize — Adjust point color, size, toggle the trend line and grid.
4. Analyze — View the correlation coefficient, R² value, and regression equation.
5. Export — Download as PNG or SVG, or copy the data to clipboard.

Understanding Scatter Plots

What is a Scatter Plot?

A scatter plot (also called a scatter diagram or XY chart) displays the relationship between two numerical variables. Each point represents one observation, with its position determined by its X and Y values.

Correlation Coefficient (r)

The correlation coefficient measures the strength and direction of the linear relationship:

• r = +1: Perfect positive correlation (as X increases, Y increases)
• r = 0: No linear correlation
• r = −1: Perfect negative correlation (as X increases, Y decreases)
• |r| > 0.7: Strong correlation
• 0.3 < |r| < 0.7: Moderate correlation
• |r| < 0.3: Weak correlation

R² (R-Squared)

R² indicates how much of the variance in Y is explained by X. An R² of 0.85 means 85% of the variation in Y can be predicted from X using the linear model.

Linear Regression

The trend line shows the best-fit line through your data points, expressed as y = mx + b where m is the slope and b is the y-intercept. This line minimizes the sum of squared distances from each point to the line.

When to Use Scatter Plots

• Exploring relationships between two continuous variables
• Identifying trends, clusters, or outliers
• Checking for linear vs. non-linear relationships
• Visualizing correlation strength before deeper analysis

Examples

Study Hours vs. Test Scores

Track how study time affects test performance:

Hours, Score
1, 52
2, 58
3, 65
4, 71
5, 78
6, 82
7, 88

Temperature vs. Ice Cream Sales

Explore seasonal business correlations:

Temp(°F), Sales($)
65, 120
70, 180
75, 220
80, 310
85, 420
90, 480

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Scatter Plot Generator FAQ