Sentence examples for sample difficulties from inspiring English sources

He said the sample difficulties are most prominent not among races, but among age groups.

Colon-Berlingeri and Burrowes (2011) and Metz (2008) demonstrated that biology undergraduates have difficulty summarizing trends from data with probability distributions and fail to use distributions to provide information about variation and representativeness of an experimental sample (difficulty IVB).

Model-based inference does not require probability samples and when used with synthetic estimation can circumvent small or no-sample difficulties associated with probability-based inference.

Much of this knowledge gap is due to sampling difficulties.

The method incorporates flexibility to allow for sampling difficulties encountered in real field experiments, such as unequal sampling intervals and incomplete sampling of the gear.

However, the effect of the presence of anthropogenic colloids and secondary minerals on groundwater chemistry remains unclear due to sampling difficulties.

The free energy perturbation (FEP /thermodynamic integration (TI) type of method has not really fulfilled its promise of being able to open a major new avenue to structure-based drug design due to slow convergence and sampling difficulties.

The analysis of the dissolved organic fraction of hydrothermal fluids has been considered a real challenge due to sampling difficulties, complexity of the matrix, numerous interferences and the assumed ppb concentration levels.

The remaining four locations were not included because of logistic sampling difficulties.

Such research has been hampered, however, by the extremely high genetic heterozygosity of longan and early embryo sampling difficulties [ 3].

Vacuum-assisted biopsy (VAB) devices came onto the market in the mid-1990s withethe goal of eliminating the sampling difficulties associated with core needle biopsy.