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Least Squares Slope Intercept Calculator
Best-fit line through three data points.
chart Free Online Tool
⚡ Instant Results
📊 Clear Comparison
🔒 100% Free Tool
Slope
Compare Your Options And Get Clear Answers
Best-fit line through three data points.
Least Squares Slope Intercept Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: Slope = Sum (x – xbar)(y – ybar) / Sum (x – xbar)^2
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Least Quick Guide
Typical values for reference.
| y at x = 1 | y at x = 2 | y at x = 3 | Slope |
|---|---|---|---|
| 2 | 4.1 | 5.9 | 1.95 |
| 1 | 3 | 2 | 0.50 |
| 10 | 8 | 6 | -2.00 |
| 0 | 0 | 5 | 2.50 |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Least Squares Slope Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real conditions vary, so treat it as a guide.
Slope = Sum (x – xbar)(y – ybar) / Sum (x – xbar)^2
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.