<span>Leaders enable others to be successful, serve as role models, and create opportunities. They develop action plans that build accountability, reliability, predictability, and persistence. Leaders work hard to develop subordinates so that they may in turn be able to delegate to them.</span>
Mortality rate, or death rate, is a measure of the number of deaths in a particular population, scaled to the size of that population, per unit of time.
The control group is usually the group in which none of their variables are changed. This group is used in order to compare it with the outcomes of the other groups.