CALCULATOR
Three Pairs Intercept Regression Prediction Calculator
Three Pairs Intercept Regression Prediction Calculator — Exactly three whole-number pairs plus a whole-number query; no predictive certainty, polynomial fitting or statistical inference.
Exactly three whole-number pairs plus a whole-number query; no predictive certainty, polynomial fitting or statistical inference. Calculations use finite-precision arithmetic.
Accepted inputs: X1 value: -1,000 to 1,000 number; X2 value: -1,000 to 1,000 number; X3 value: -1,000 to 1,000 number; Y1 value: -1,000 to 1,000 number; Y2 value: -1,000 to 1,000 number; Y3 value: -1,000 to 1,000 number; QUERY value: -1,000 to 1,000 number.
How the calculation works
Use the least-squares slope and intercept, collected into one integer numerator before division.
Worked example
With x1 value 1 number, x2 value 2 number, x3 value 4 number, y1 value 2 number, y2 value 5 number, y3 value 6 number, query value 3 number, result is 5.142857143 number.
Assumptions and limits
Exactly three whole-number pairs plus a whole-number query; no predictive certainty, polynomial fitting or statistical inference. Calculations use finite-precision arithmetic.