For quantitative information, ISO 14019-2 details the approach for continuous and discrete forms of data and the evidence-gathering activities that can apply to each. Continuous data can be further categorized as ratio and interval data.
For qualitative information, ISO 14019-2 details the approach for binary, ordinal and nominal data forms and the evidence-gathering activities that can apply to each.
For both information types, verification approaches include assessing data collection, editing, transformation, control processes and numerical techniques that support verifying analytical testing.