1. A lack of adequate or sufficient information, evidence, or facts needed to make a decision, reach a conclusion, or complete an analysis
The project was delayed due to insufficiency of data from the field survey.
O projeto foi atrasado devido à insuficiência de dados da pesquisa de campo.
2. In technical or scientific contexts, the absence of enough quantitative or qualitative information to support a claim or hypothesis
The researcher acknowledged the insufficiency of data in the preliminary report.
O pesquisador reconheceu a insuficiência de dados no relatório preliminar.