Before conducting queries, some preprocessing needs to be done.
Before conducting the quantitative performance evaluation, we give a demonstration of the system.
Before conducting an independent evaluation, a checklist is required about user requirements and related standards.
Before conducting an analysis of variance (ANOVA), validity was examined through reliability (Cronbach's α) and unidimensionality.
Before conducting the experiment, the data logger locks the GPS onto the surface.
Before conducting further analyses, statistical model assumptions were examined.
Before conducting the final analyses several preparation analyses were conducted.
Before conducting the statistical analyses, we examined the data for univariate and multivariate outliers.
Before conducting the rapid HIV test, a trained counselor will provide HIV/STI counselling.
Before conducting the experiments, a surgical procedure is typically needed to prepare the animals.
"We should not leap to conclusions before conducting an investigation".
