The phrase "amount of the variance" is correct and usable in written English.
It can be used in contexts related to statistics, data analysis, or research when discussing the extent or degree of variance in a dataset.
Example: "The amount of the variance in the results indicates a significant difference between the two groups."
Alternatives: "degree of variance" or "extent of variance".
The effect is large enough to explain substantial amount of the variance in party divergence across states.
Depression scores only accounted for a small amount of the variance in CFS sufferers' lower subjective assessment of their cognitive performance compared to control participants.
Our findings demonstrated that the proposed model explained a large amount of the variance of purchase intention, invariant across different subgroups.
Variation in survey design had considerable predictive power and accounted for a non-trivial amount of the variance in women's affirmative responses.
Although cold can have physiological effects, which may lead to thrombosis, increased blood pressure and lower resistance to respiratory infections in vulnerable people, the ONS says that temperature "only explains a small amount of the variance in winter mortality, and high levels of excess mortality can occur during relatively mild winters".
Within temperate forests, canopy height alone explained a large amount of the variance in reference canopy conductance (r2= 0.68) and this relationship may be more immediately applicable in the terrestrial ecosystem models.
Results showed that our theoretical model explained a sufficient amount of the variance in loyalty; the hypothesized relationships in our research framework were generally supported; and cognitive, evaluative, and motivational processes were significant mediators.
Despite advances in our understanding of CAD in the general population, a large amount of the variance in development of disease is unexplained.
Analyses of TPB show that PBC accounts for a significant amount of the variance in intention and behavior change (Armitage & Conner 2001).
The largest amount of the variance is mapped to the first component, with decreasing variance going to each of the following ones.
The results of this study suggest that fear-avoidance beliefs explained a significant amount of the variance in functional performance levels in activities of daily living and sports even after controlling for injury-related variables and physical impairment measures.
