9 lines
269 B
TypeScript
9 lines
269 B
TypeScript
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import pl from "npm:nodejs-polars"
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export function residuals(x: pl.Expr, y: pl.Expr): pl.Expr {
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const xM = x.minus(x.mean())
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const yM = y.minus(y.mean())
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const xMSQ = xM.pow(2)
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const beta = xM.dot(yM).div(xMSQ.sum())
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return yM.minus(beta.mul(xM))
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}
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