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Effect of linear density per filament, overfeed, air pressure and texturing speed on experimental values of physical bulk, instability and loss in tenacity of air-jet textured yarn has been discussed. Potential contribution of each of the variables to explain the properties of air-jet textured yarn is evaluated on the basis of normalized regression coefficients and analysis of variance obtained with the help of multiple regression model formed to predict the air-textured yarn properties. Analysis has shown that most dominating factor to explain the variability in air-jet textured yarn properties is overfeed percentage. Second most influencing variable to explain the variability in air-jet textured yarn properties is linear density per filament in the case of physical bulk and yarn instability and air-pressure in case of loss in tenacity.