When we write vectors as matrices, we tend to write an $n$-dimensional vector vector as $n \times 1$ column matrix. We emphasize that the gradient vector is defined only for scalar-valued functions. For vector valued functions, we will stick with viewing the derivative as a matrix.
Gloomy Addiction Relapse Statistics. Drug and alcohol rehab statistics show that the percentage of people who will relapse after a period recovery ranges from 50% to 90%. This is a frightening statistic and it is often used as justification for those who wish to carry on with their addiction.
The percentage of uninsured U.S. adults has dropped from 18 percent in 2013 to 13.4 percent, as of midway 2014, according to a survey by the Gallup-Healthways Well-Being Index. Thatâs the lowest quarterly rate in more than six years of tracking the uninsured.