1 Health benefits of watermelon are actually expansive and the fruit also contains traces of the mineral potassium which helps in the day to day functioning of the body.  The phytochemicals help in lowering blood pressure and the lycopene helps fight cancer and increase immunity.
census - a periodic count of the population. nose count, nosecount. counting, enumeration, numeration, count, reckoning, tally - the act of counting; reciting numbers in ascending order; the counting continued for several hours.
1 Population and sample. In statistics, a population is an entire set of objects or units of observation of one sort or another, while a sample. is a subset (usually a proper subset) of a population, selected for particular study (usually because it is impractical. to study the whole population).