Our average inter-assay coefficient of variation was 7.5%. Therefore, we considered only PSA changes exceeding +/- 15% as significant. Fluctuations in serum PSA occurred in 78% of the men during the observation period, and 12.5% had at least a single PSA increase exceeding 0.75 ng/ml. per...
Additionally, a form of the Pearson correlation coefficient shows up in regression analysis.R-squaredis a primary measure of how well a regression model fits the data. This statistic represents the percentage of variation in one variable that other variables explain. For a pair of variables, R-s...
In simple linear regression, RSquare is the square of the correlation coefficient, r. This statistic, which falls between 0 and 1, measures the proportion of the total variation explained by the model.Figure 8: Additional measures of the fit of the model The closer RSquare is to 1, t...
Our results suggest that, when interpreting class average normalized FCI gains and comparing different classes, it is important to take into account the variation of students' cognitive skills, as measured either by the SAT or by Lawson's test. While Lawson's test is not commonly given to ...
The 1985–97 CO 2 flux is computed in a 5° wide latitudinal band as a combination of Δ P and CO 2 exchange coefficient, K , deduced from satellite wind speeds, U . It exhibits up to a factor 2 seasonal variation caused by K -seasonal variation and a large interannual variability, ...
The authors prove uniqueness of entropy solutions in the sense of Kruzkov in the space , by using the continuous dependence results in [39] and a fixed point argument. This requires fairly strict hypothesis on the regularity of the initial data (namely bounded variation). They also introduce ...
The ranking method is established using simulated data where the true B(θ(v)) is known, so that each B(v) can be evaluated against B(θ(v))by coefficient of determination (R2). We found that our procedure consistently optimizes for R2 (Supplementary Figure 4b, c; see Supplementary ...
(v)) is known, so that eachB(v) can be evaluated againstB(θ(v))by coefficient of determination (R2). We found that our procedure consistently optimizes forR2(Supplementary Figure4b, c; see Supplementary Note5.5for figure details). The proper sample size for the calibration can be ...
With this graph we see that we can interprete coefficient X1:F12 as changing the X1 slope when F2=1 and F1=2 compared to the X1 slope when both F1 and F2 are 1. The parameter X1:F12:F22 then allow for extra variation in the X1 slope when both F1 and F2 are 2. Again these ...
(12μ) temperatures measured by Meteosat at 02:00 UTC, featuring saturated cold temperatures at the top of the clouds, while the 31.4 GHz brightness temperatures measured by AMSU-A at 01:50 UTC (Figure 1, bottom) allow one to discern some horizontal variation in the amount of scattering ...