I've plotted a histogram of data collected in real life, not generated data. It looks like a negative binomial binomial distribution with a 2nd bump, lower from the peak bump of the curve. Here is a screenshot:
Question - is the second bump of any significance? Is it expected and not significant, as if produced expected to be produced by chance? Or does it indicate something, like 2 populations in my sample data?
Notes:
- Sample size - 21,700;
- Question as "In a random walk, on average, how many steps does it take to move a distance of 10 steps from the starting position?" -- but the random walk is assumed, the process that generated my data could be a non-random walk
- Uneven spacing due to most counts are even numbers
- did not do a qqplot to verify what kind of distribution, negative binomial is a guess