Swelling of the ankle and feet is relatively frequent symptom in most people. In itself it does not represent a disease but rather the symptom of an underlying disease. 1  Causes of swollen ankles and feet are numerous including:  Dependent swelling (edema)
Report Abuse. POPULATION PARAMETER(p) is a value used to represent a certain QUANTIFIABLE characteristic of a population. This is like the mean or variance of a population and often these values are unknown, and are estimated using sample data.
For a single variate having a distribution with known population mean , the population variance , commonly also written , is defined as. (1) where is the population mean and denotes the expectation value of . For a discrete distribution with possible values of , the population variance is therefore. (2) whereas for a continuous distribution, it is given by. (3) The variance is therefore equal to the second central moment .