Skip to content

Home / DOE / Create Designs / Factor Names and Coding

Enter Factor Names and Coding

Enter the name of the factor (input) and the coded values. The coded values will differ if the factor is categorical or quantitative.

  • Categorical (Qualitative) Inputs: If the input is categorical, replace the -1 and +1 with the name of the two levels. For example, if the factor is "Vendor", replace -1 with "ACME" and replace +1 with "SigmaZone".

  • Quantitative Inputs: If the input is quantitative, replace the -1 and +1 with the range of experimentation. For example, if the factor is Temperature, replace -1 with 100 and +1 with 200. Proper DOE requires that the input variables be coded to a sequence of -1, 0, and 1. The purpose of this coding is to ensure orthogonality during regression and provide common scale to the inputs. Quantum XL will automatically replace categorical (qualitative) variables with predictor (dummy) variables.

Factor Names and Coding

Array Column: If the design is a Taguchi design, Quantum XL allows you to assign each input to a unique array column.