non-systematic
adjective
UK/ˌnɒn.sɪs.təˈmæt.ɪk/
US/ˌnɑːn.sɪs.təˈmæt̬.ɪk/
Definitions of non-systematic adjective
not following a structured method or organized plan; lacking a consistent approach
Due to its non-systematic approach, the results of the study are somewhat unreliable.
The company used a non-systematic approach when selecting new products, which resulted in inconsistent decisions.
The data collection was non-systematic, making it hard to draw any reliable conclusions.