I'm looking at this online text on statistics, and reached Figure 22-2 on this page. I don't understand what this chart is supposed to represent. When I click "take sample" with sample size 5, taking 1 sample from 100 bins, I get values like 400. But looking at the population, none of the numbers in the population are over 50. So what does a value of 400 represent? The sum of the five samples doesn't even reach 400 in a best-case scenario.

Also, what does "100 bins" mean? The population doesn't have 100 members. Are some of the members repeated in the 100 bins?

I guess I just generally don't understand any of the meaning of this chart.