06/04/2026
Subsample Post #4: Using Reporting Basis to normalize data
Sometimes sampling must be completed using non-standard methods, or the sampling process may vary depending on the equipment available at each trial location. In these situations, the Reporting Basis can be used to normalize data as it is entered into ARM.
For example, suppose researchers are recording the number of nematodes per 500 cm³ of soil. At Trial Site A, samples are collected using 250 cm³ of soil, while Trial Site B uses 200 cm³ samples. Even though the sample sizes differ, both trialists can normalize their data to the same reporting basis of 500 cm³ when entering values into ARM.
▪ Trialist A multiplies raw values by 2 (250 × 2 = 500)
▪ Trialist B multiplies raw values by 2.5 (200 × 2.5 = 500)
Using a consistent reporting basis helps standardize data across locations, making comparisons and analysis more accurate and meaningful.
