Just 48percentt of the nation's high schools offer calculus, for example, and the proportion is even lower — 33percentt — among schools with predominantly black and Hispanic populations.
- better distribution of personnel by categories: for example, increasing the proportion of assistants and technicians in order to improve the productivity of specialized staff in performing tasks requiring higher skills.
These changes have been greatest in very old age groups; between 1971 and 1991, for example, the proportion of women aged 85 years and over living in households including two or three generations fell from 42 to 21%, whereas the proportion living alone increased from 30 to 49% (Grundy, 1999).
At d 76, for example, the proportion and percentage pregnant was 47/150 (31.3%) for cows subjected to TAI, 48/95 (50.5%) for cows receiving fresh embryos, and 39/141 (27.7%) for cows receiving a vitrified embryo.
Between 1980 and 1992, for example, the proportion of disadvantaged children in four-year colleges fell slightly (from 29% to 28%) while the proportion of well-to-do children rose substantially (from 55% to 66%).Mr Golden's findings do not account for all of this.
Between 2006 and 2010, for example, the proportion of youth who ever used hookah increased significantly [ 22].
Yet, in all three examples the proportion of false positive genes decreased with more stringent thresholds both above and below the reference cut-off.
For example — measuring the proportion of projects that move beyond the proof-of-concept stage and the proportion of data that's utilized in the business," said Ditton.
