*4.3.3 Precision (repeatability, consistency): En (normalized error)*

The calculation of the *E*n (normalized error) focuses on the difference between duplicate panel results (mean) in relation to a defined SD of 0.7.

*E*n = difference between duplicate panel results (mean) in relation to SD.

• Duplicate = comparison between *in situ*/remote

*Sensory Evaluation of EVOO: Do Different Test Locations Have a Relevant Impact on Data… DOI: http://dx.doi.org/10.5772/intechopen.102702*

**Figure 15.** *DNp (SOP) fruitiness (n = 9).*


Coming to the aspect of "Precision" (repeatability, consistency), we can see in the figure for fruitiness (**Figure 16**) that results of the normalized error from SOP are in line with the requirements, that is—well below the action limit of 1.0. This is the case for bitterness and pungency as well, not shown here. Based on these findings, it can be concluded that results of SOP are repeatable between different test situations and statistically acceptable (precise, consistent).
