The phrase "amount of the total variance" is correct and usable in written English.
It can be used in contexts related to statistics, data analysis, or research when discussing how much variance is present in a dataset.
Example: "The amount of the total variance explained by the first principal component was significant, indicating a strong relationship between the variables."
Alternatives: "quantity of the overall variance" or "extent of the total variance".
If a substantial amount of the total variance in these data is accounted for by a few (preferably far fewer) principal components or new variables, then these few principal components can be used for interpretational purposes or in further analysis of the data instead of the original variables.
Given the first two PCoA axes obtained for Fungi explained a little amount of the total variance, Mantel tests were also performed between fungal-dissimilarity matrix and canonical distance matrices of each environmental variable.
While our regression modeling indicates that dairy consumption and produce perchlorate levels are directly related to estimated perchlorate dose, these models only explained a relatively small amount of the total variance in estimated perchlorate dose in the study population (13 14%).
The principal axis method was used to extract all factors that had eigenvalues greater than 1, and therefore can account for a significant amount of the total variance.
Dietary patterns derived using principal component analysis generally tend to account for only a small amount of the total variance of diet [ 55].
The principal axis method was used to extract all factors that had eigenvalues greater than 1 and, therefore, could explain a significant amount of the total variance.
In the NKI2, Wang and TRANSBIG data sets, the genes correlated with each of these factors accounted for approximately similar amounts of the total variance in the data sets.
A Chinese study reported that emotional distress was the most important explanatory factor for quality of life which amounted to 28.7 53.8%% of the total variance [ 88].
The second component, PC2, which can be interpreted as the main axis of change in gene expression once the effect of loss of pluripotency genes (PC1) has been removed, amounts to about 15% of the total variance.
