The phrase "the data is ascertained" is correct and usable in written English.
You can use it when you are discussing information that has been collected and verified. For example: "The research team has carefully collected and analyzed the data, and the data is ascertained."
The quality of the data is ascertained by ample instruction and training sessions, regular regional consensus groups, quality control audits, an online thesaurus available during data-entry and systematic control for erroneous or missing entries [ 20].
The quality of the data is ascertained by ample instruction and training sessions, regular regional consensus groups, quality control audits, an online thesaurus available during data-entry and systematic control [ 43, 44].
Normality of the distribution of the data was ascertained using the Shapiro Wilk test.
The data were ascertained by retrospectively linking several databases with electronically coded data.
The data were ascertained from birth certificates from all hospitals and birth centers in the state.
The quality of the data was ascertained through visual inspection of the scout projection and reconstruction images.
For the remaining 20%, these data were ascertained from the mothers at the time of their daughter's original enrollment in the study (the average age of the daughters =24 years).
For patients who had died these data were ascertained for the 6 months preceding this event.
Importantly, this GWAS enrichment appeared most significant when the DNAse data was ascertained in a cell type relevant to the phenotype studied (Maurano et al., 2012; Reddy et al., 2012; Schaub et al., 2012).
The empirical data was ascertained on an Affymetrix 6.0 SNP chip and contained ~770, 000 SNPs across the 2, 770 Mb of the autosomal portion of the human genome that is 'SNP-mappable.' LD in data simulated under a neutral mutation-drift model is known to have much lower LD than is observed in human data [ 33, 35].
The reliability of the tie-lines data was ascertained by applying the Othmer Tobias equation, and the non-random two liquid (NRTL) model used to fit the experimental LLE data.
