Their quantification of the PV panel installation area relied on an approximation of the proportion of flat and inclined rooftops, excluding half of the latter as north facing and 70% of the total due to shading.
In order to solve the Master Equation we had to make the approximation that the proportion of the adults that were uninfected remained constant throughout the time frame of our predictions.
Farmers' perception as to whether they believed their farm was affected by PRRSV, obtained from the cross-sectional study, was used as an approximation of the proportion of farms with clinical signs suspicious of PRRS.
Second, we obtain a diffusion approximation to the proportion of time the beneficial mutation segregates in various frequency ranges (the sojourn-time density) and the expected time to its extinction (the mean absorption time).
Approximations of the proportion of false positives in this range (0.17 - 0.28) have been reported previously [ 22].
OS only represents an approximation of DSS if the proportion of cancer-unrelated deaths is small.
If one is willing to accept the large sample approximation to normality for the proportion of variance explained measures, e.g. Nagelkerke's R2 statistic [ 15], the c-index and the shrinkage estimator, then these estimates can be simply treated as another estimate that can be averaged using Rubin's rules for single estimates.
At present, there is thus no good approximation for the actual figures on the proportion of intronic and intergenic regions [ 2].
The approximation only affects sampling efficiency, not accuracy: the poorer the approximation, the larger the proportion of rejected samples.
The Root Mean Square Error of Approximation (RMSEA) is the proportion of variance-covariance information not correctly predicted by the model, with values of ≤ .08 indicating an acceptable fit and values ≤ .05 a good fit [ 44].
Third, to simplify the calculations we have suggested, as a first approximation, that a state variable can be estimated as the proportion of deficits.
