# how to calculate this?

I need to calculate some order of a set of samples, but I do not know what method I should use. For example, there are many people, and I get the number of people every of whom has some apples (apple<=>people):0<=>1, 1<=>4, 2<=>16, 3<=>2. That is to say, there is 1 people who has no apples, there are 4 people every of whom has 1 apple, there 16 people every of whom has 2 apples, and there are 2 people every of whom has 3 apples. And I want to reflect the order of the apple possession is 2: Most people have 2 apples everyone. I would like the order number is around 2 here, e.g. 2.3 or 1.9. How should I calculate this order number?

Maybe you want the mode, the most common value. Maybe you want the median, the value that half the people have more than and half have less. Maybe you want the mean, the classical average. For your example, the first two would be exactly 2, the mean would be $\frac {42}{23} \approx 1.83$ which reflects the fact that more people have less than 2 apples than have more.