The plot of the measurements is shown in Appendix E. As we have only two PSDs to consider, and no indication of the methods used to disperse the material for analysis, it is not possible to determine the specific reasons for the observed variations. It is also impossible to determine the outlier, other than by comparing with the other methods distribution. In that case the set L is an outlier. Table 7 shows the median for the two sets with the standard deviation and the median for the set V (the set supposedly correct). The median values of V are higher than the ones of the average of sets L and V.
|Table 7: Average median diameter from LAS-D method.|