RaqForum 43 No.
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Residual plot

 

Residual=True value - prediction value

Calculate and plot residuals in houseprice result.xls

A

1

=T("houseprice_result.xls")

2

=A1.derive(SalePrice-SalePrice_predictvalue:Residual)

3

=canvas()

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=A3.plot("NumericAxis","name":"x")

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=A3.plot("NumericAxis","name":"y","location":2,"autoRangeFromZero":false)

6

=A3.plot("Dot","lineWeight":0,"lineColor":-16776961,"markerWeight":1,"axis1":"x","data1":A2.(SalePrice),"axis2":"y","data2": A2.(Residual))

7

=A3.draw(800,400)

A2 Residual. Calculate the Residual

A3-A7 Take SalePrice on the x axis and Residual on the y axis to draw the scatter plot, which is the residual plot

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