There is no known statistic, it has never been surveyed, and it would be impertinent to do so.
A calculator.
It adds and subtracts numbers.
perameter is a measure of population or universe, statistic is a measure of a sample data drawn from population
Not necessarily.For instance, one can calculate a so-called 't' statistic as a way of testing an hypothesis about one or two population means. Notice that in this case the statistic does not describe a population characteristic.
a number
155
The relations depend on what measures. The sample mean is an unbiased estimate for the population mean, with maximum likelihood. The sample maximum is a lower bound for the population maximum.
the top adds what the bottom adds. the top subtracts what the bottom subtracts. the top divides what the bottom divides. the top multiplies what the bottom multiplies.
A parameter is a numerical measurement of a population; a statistic is a numerical measurement of a sample.
The population of Country Energy is 4,000.
The population of Country Financial is 2,669.