What's the difference between difference and variance?

Difference


Definition:

  • (n.) The act of differing; the state or measure of being different or unlike; distinction; dissimilarity; unlikeness; variation; as, a difference of quality in paper; a difference in degrees of heat, or of light; what is the difference between the innocent and the guilty?
  • (n.) Disagreement in opinion; dissension; controversy; quarrel; hence, cause of dissension; matter in controversy.
  • (n.) That by which one thing differs from another; that which distinguishes or causes to differ; mark of distinction; characteristic quality; specific attribute.
  • (n.) Choice; preference.
  • (n.) An addition to a coat of arms to distinguish the bearings of two persons, which would otherwise be the same. See Augmentation, and Marks of cadency, under Cadency.
  • (n.) The quality or attribute which is added to those of the genus to constitute a species; a differentia.
  • (n.) The quantity by which one quantity differs from another, or the remainder left after subtracting the one from the other.
  • (v. t.) To cause to differ; to make different; to mark as different; to distinguish.

Example Sentences:

  • (1) All transplants were performed using standard techniques, the operation for the two groups differing only as described above.
  • (2) This study was undertaken to determine whether the survival of Hispanic patients with squamous cell carcinoma of the head and neck was different from that of Anglo-American patients.
  • (3) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
  • (4) Spectral analysis of spontaneous heart rate fluctuations, a powerful noninvasive tool for quantifying autonomic nervous system activity, was assessed in Xenopus Laevis, intact or spinalized, at different temperatures and by use of pharmacological tools.
  • (5) Age difference did not affect the mean dose-effect response.
  • (6) The prenatal risk determined by smoking pregnant woman was studied by a fetal electrocardiogram at different gestational ages.
  • (7) Although the mean values for all hemodynamic variables between the two placebo periods were minimally changed, the differences in individual patients were striking.
  • (8) Phospholipid methylation in human EGMs is distinctly different from that in rat EGMs (Hirata and Axelrod 1980) in that the human activity is not Mg++-dependent, and apparent methyltransferase I activity is located in the external membrane surface.
  • (9) The high amino acid levels in the cells suggest that these cells act as inter-organ transporters and reservoirs of amino acids, they have a different role in their handling and metabolism from those of mammals.
  • (10) The outward currents are sensitive to TEA and their reversal potentials differ.
  • (11) During control, no significant difference between systolic fluctuation (delta Pa) and pleural swings (delta Ppl) was found.
  • (12) This difference was not due to ATPase activity in the assay.
  • (13) No differences between the two substances were observed with respect to side effects and general tolerability.
  • (14) Five probes of high specificity to individual chromosomes (chromosomes 3, 11, 17, 18 and X) were hybridized in situ to metaphase chromosomes of different individuals.
  • (15) The cross sectional area of the aortic lumen was gradually decreased while the length of the stenotic lesion gradually increased by using strips with different width.
  • (16) For male schizophrenics, all symptom differences disappeared except one; blacks were more frequently asocial.
  • (17) Between 22 HLA-identical siblings and 16 two-haplotype different siblings, a significant difference in concordance of reactions for the B-cell groups was noted.
  • (18) It would be fascinating to see if greater local government involvement in running the NHS in places such as Manchester leads over the longer term to a noticeable difference in the financial outlook.
  • (19) Snooker, which became and remains a fixture in the BBC2 schedules, was chosen for showing because it is the sport in which different shades are most significant.
  • (20) Would people feel differently about it if, for instance, it happened on Boxing Day or Christmas Eve?

Variance


Definition:

  • (n.) The quality or state of being variant; change of condition; variation.
  • (n.) Difference that produce dispute or controversy; disagreement; dissension; discord; dispute; quarrel.
  • (n.) A disagreement or difference between two parts of the same legal proceeding, which, to be effectual, ought to agree, -- as between the writ and the declaration, or between the allegation and the proof.

Example Sentences:

  • (1) Under resting conditions, the variance of cerebral metabolism seems to be primarily related to regions which are closely involved with the limbic system.
  • (2) Comparisons of ICR locations were made between flexion and extension, between left and right limbs, and between living and dead dogs, using analysis of variance.
  • (3) Calbindin-D9K (immunoassay) was decreased in SHR vs WKY rats by 27%, 64%, and 67% in segments A1, B1, and C1, respectively (P < 0.01); its mRNA was decreased to a similar extent (69%, 82%, and 80%, respectively; P < 0.002 by analysis of variance).
  • (4) During recovery, while the heart rate decreased and the RR interval variance increased, there was a relative increase in LF and a relative decrease in HF in normal subjects (either sedentary or athletic).
  • (5) The total amount of variance explained in the frequency of utilization (47%) exceeded that explained by other studies of utilization of various health services by the elderly.
  • (6) However, consistent data collection procedures appeared to reduce within-subject variance.
  • (7) The tissue counts and specific activity were analyzed by three-way analysis of variance.
  • (8) The pattern of day to day variability in egg counts from individuals can be characterized by the linear relationship between the logarithms of the variances and means.
  • (9) It appears impossible to define a "positive" tilt test that would adequately identify patients with clinically significant dehydration or blood loss; this is due to the large variance in patients' orthostatic measurements both in a healthy and in an ill state and the lack of a significant correlation of orthostatic measurements to a level of dehydration.
  • (10) There was a large variance of the obtained values in all groups.
  • (11) The excellent comparability of paired platelet counts, at variance to that found in some previous studies, indicates that skin puncture blood can be used for platelet estimation providing an appropriate counting method is used.
  • (12) Analysis of variance confirmed that the intra-individual variations (CV = 36%) exceeded all other variance components involved.
  • (13) Child weight accounted for 72 and 78% of the variance in RMR in studies 1 and 2, respectively.
  • (14) Study I findings did not provide support for synergistic mechanisms; nonorthogonal analysis of variance showed interaction effects (CRT x IT) restricted to tactile-perceptual speed.
  • (15) The PvuII-CIII and PvuII-AIV polymorphisms were both associated with differences in apo AI levels, explaining 3.7%-5.7% of the sample variance.
  • (16) Fifty-two percent of the variance in visit volume were explained; compared with the findings reported in similar studies, alignment with a regular source of care was more closely associated with visit volume and physician contact.
  • (17) The best was the oral version of the Symbol Digit Modalities test, which by itself accounted for 70% of the variance of the full-sized-vehicle driving score.
  • (18) Both the indirect and direct measures of attitude and social norm explained a significant amount of the variance in intention and BSE frequency.
  • (19) The analysis of variance proved the parallelity and linearity of the dose-response curves.
  • (20) Although large metropolitan programs generally followed the guidelines of the American Thoracic Society and the Center for Disease Control for tuberculosis chemoprophylaxis, some major variances in practice were reported.