Sentence examples for variability unknown from inspiring English sources

Unfortunately, multiple sources of uncertainty must also be considered in the analysis, including environmental variability, unknown model functional forms, and unknown values of model parameters.

Although the cause of the variability is unknown, immense amounts of volcanic activity on the rocky surface could be driving the changes, the researchers say.  .

EZ Canis Majoris is a Wolf Rayet star of spectral type WN4 that varies between magnitudes 6.71 and 6.95 over a period of 3.766 days; the cause of its variability is unknown but thought to be related to its stellar wind and rotation.

The source of this variability remains unknown, but apparently can be influenced by hearing.

Weight at age, maturation and natural mortality due to other reasons than seal predation were assumed constant in projections because functional relationships describing their variability are unknown [37].

The origin of this variability is unknown, but may reflect differences among strains, variations in experimental parameters, differences in the tracking algorithms deployed, or a combination of these factors.

Overall, the genetic basis for serum IGF1 variability remains unknown in adults and has not been studied in growing children.

The cause of this variability is unknown, but it does suggest that compensation is not a universal effect.

The reason for this inter-individual variability is unknown, but e.g. diet, particularly dietary fats, may be important.

58, 59 Elimination pathways are not yet defined, and the clinical relevance of trastuzumab kinetic variability is unknown.

Other than cigarette smoking, which worsens COPD in ATD, genetic and environmental modifiers that determine this phenotypic variability are unknown.