Averages are collected all the time because it is important to predict the likely behaviour of different aspects of our modern society. It is important because it helps us to plan for the future.
In the financial world we collect information and calculate averages and this help predict patterns of performance. So we can talk of the dow jones industrial average which is a calculation of the average behaviour of stocks listed in the New York stock exchange from the industrial sector. Then there are average gas prices, important, as gas prices are very central to any economy. We can calculate the average Canadian salary too, in the salary survey.
On the healthy side of things, you may want to know what your average body fat is. This can be your guide on what to do. Should you lose more or gain a little more. In a weight loss plan it may be a good idea to collect information on average weight loss and see which method is more effective.
And finally, something most people would like to know; what would be their iq test average.