Stratified sampling is a method of sampling from a population in statistics. When sub-populations vary considerably, it is advantageous to sample each subpopulation (stratum) independently. Stratification is the process of grouping members of the population into relatively homogeneous subgroups before sampling.tratified sampling is a method of sampling from a population in statistics. When sub-populations vary considerably, it is advantageous to sample each subpopulation (stratum) independently. Stratification is the process of grouping members of the population into relatively homogeneous subgroups before sampling.
Hardening (computing) In computing, hardening is usually the process of securing a system by reducing its surface of vulnerability, which is larger when a system performs more functions; in principle a single-function system is more secure than a multipurpose one.
Posted on March 12, 2008 by Babou. A baseline is used to perform analysis to find current performance against to the expected level for a specific activity in established time-phase. In Project Management, Baseline refers to the accepted and approved plans & their related documents. Project baselines are, generally, approved by project management team and those are used to measure and control of project activities.