Note: for the preliminary test, the value of TWA-8h should include the expanded uncertainty U (coverage factor = 2). Cfr EN 482:2021.

Preview of the head of your dataset


                  

                  

                    
Shapiro-Wilk

                    

                      p < 0.05 ~ distribution of sample significantly different from normal distribution
                      

                      p > 0.05 ~ distribution of sample not significantly different from normal distribution
                    

                    
Levene

                    

                      p < 0.05 ~ significant difference between the variances of the subgroups
                      

                      p > 0.05 ~ no significant difference between the variances of the subgroups
                    

                    
ANOVA

                    

                      p < 0.05 ~ significant difference between the means of the subgroups
                      

                      p > 0.05 ~ no significant difference between the means of the subgroups