Coefficients of phenotypic variation from the random regression model were 11.5%, 11.7%, 13.8%, 15.2%, and 19.1% at the five x-axis classes, showing that the increase in variance was not a consequence of a change in the BW7 mean.
Thus far, we have discussed how exogenous variation arising from the random assignment of a policy can be used to identify the social effect associated with a specific model the local average model which, as we saw, arises from an economic model where agents conform to their peers.
In the analysis by Zhang et al. (2009), the fixed effect model and the random effect model showed similar results—in the fixed effect model, the variability of the results is estimated from within-study variations, while the random effect model assumes a different underlying effect for each study, taking into account between-study as well as within-study variations (Khoshdel et al. 2006).
Our empirical strategy exploits exogenous variation in parental incarceration from the random assignment of criminal defendants to judges with different incarceration tendencies.
These variations, known as "noise," come from the random nature of biochemical reactions [ 22].
The calculated standard error reflects the variation of the random errors from 8 technical replicates, in other words, the variability of each probe.
In order to eliminate the drawbacks arising from the random variation of Tf,i, the paper proposes an exergy analysis of a flat-plate solar collector based on the assumption that Tf,i=Te=const.
To evaluate overall model fit, we studied over-dispersion using methods of quasi likelihood, and tested for any statistically significant deviations from the random variation of the assumed model.
It is assumed that each ply-orientation exhibits individual spatial and random variations from the nominal mean value.
