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.
By Russ Britt. The percentage of medically uninsured people in the U.S. has fallen to a record low, according to data released Thursday by the pollsters Gallup and Healthways. The report says the uninsured rate stood at 13.4% during the second quarter, its steepest drop ever, down from 15.6% in the first quarter. Itâs also the first survey conducted after the sign-up period for the Affordable Care Act ended on March 31.