2.2
AnswerRevenueemployee turnover: the ratio of the number of workers that had to be replaced in a given time period to the average number of workers
population density
Number of runs given by the bowler divided by no.of wickets taken by him at the same time....
Labor turnover is the ratio of the number of workers replaced to the average number of workers employed during a given time period.
It would be called the "Population Density"
The number of people using wikianswers at any given time varies rapidly, the total would vary by the second. It is a worldwide site so the number at any given time would be many thousands. but in the morning there is least people than in the afternoon.
Average speed is an average value of speed over a given time. If your speed is constant (not changing), then your average speed will equal your speed at any given moment in time.
Distance = time * average speed (velocity) Average speed = Distance/time
The arithmetic average of speeds over a given time period is a pretty much useless measure - of anything!
It is given as an average because the distance varies over time.
The number of listings will naturally fluctuate all the time, but eBay give an average figure of 112.3 million listings at any given time.
A birth rate is a number of births that occur in a period of time in a given area.