Related Terms. A Rapid Application Development (RAD) system developed by Borland International, Inc. Delphi is similar to Visual Basic from Microsoft, but whereas Visual Basic is based on the BASIC programming language, Delphi is based on Pascal.
A parameter is a numerical value that states something about the entire population being studied. For example, we may want to know the mean wingspan of the American bald eagle. This is a parameter because it is describing all of the population. Parameters are difficult if not impossible to obtain exactly.
Population Parameter Definition. Population Parameter is the characteristic of the population. Sample Statistic on the other hand, is a characteristic of the sample. Sample statistic is used to estimate the value of the Population parameter. The value of the statistic will change from one sample to another. So from the distribution of the sample statistic we draw conclusion about the population. A sample statistic need not be always a true value of the population parameter.