Young´s modulus is one important value in the field of plastic processing which describes the correlation between stress and strain during deformation of a material at the linear elastic range. The higher the elasticity of a material, the higher is the Young´s modulus. In practice Young´s modulus is measured for example with tensile test. For FEM simulation (finite element method) Young`s modulus is necessary to calculate stress or strain, depending on which of both parameter is given. The measured values scatter around an arithmetic mean since different errors occur. Various errors like systematic or random errors have different influence on the result of the measurement. Systematic errors can`t be excluded, they can only be minimized also they can’t be detected. On the other hand, various errors can be detected and described. To characterize these errors parameters like variance or scatter are useful. The result of a measurement according to standard is the total scatter of modulus that can be differentiated into the measurement related and the material related spread. An interesting question is if one of these spread predominate and how these spread can be minimized or eliminated. For this paper, a method was developed to obtain the two different scatters. Based on measurements with the tensile test a nondestructive method was found to receive only the measurement-related scatter. The main results of these experimental investigations are that it is possible to measure different mean variation and to keep apart the different scatter. Three different thermoplastics are used. Polypropylene as a semi-crystalline standard polymer, Polyamide 6.6 as a semi-crystalline technical polymer and Polymethylmethacraylate as an amorphous technical polymer.