Replacement was another idea we talked about in the population analysis class this week. Essentially it is an estimate of the deaths and migratory outflows from the area over a specified period of time and is called replacement because it is what you would need to replace in order for population to remain the same. Not really terribly complicated, but it is a nice complement to the idea of turnover and I generated both the level and the rate for counties in North Dakota.
I am teaching population analysis to the undergraduates this year which is a first for me and them. We talked about the simple calculation of growth rates and how population change is actually more complicated and subtle than an overall population growth rate. This got us to the idea of turnover, that is just measuring the births, deaths, inflows, and outflows that go into the changing population. Basically just seeing how much is changing compared to the overall population level. So I thought I would have some fun and apply this to North Dakota. This could be especially important given that some North Dakota counties experienced high degrees of population change due to economic circumstances.
Keeping with the topics from recent weeks on the radio I thought I would write some more about annual pay. This time I took a look beyond the city of Grand Forks or the county to look at the state as a whole. We can delve back in to the county level again as needed but I was curious about how certain sectors would compare across states.
I was thinking about North Dakota and the population shifts and changes of the the last few years. The economics of the state are so clearly connected to the population changes, which are clearly connected to the economic changes in the state too. There really is an intense and important feedback relationship between population and economics in this state in particular.
The demographic transitions within North Dakota due to the Bakken oil boom are simply fascinating. These are part of my presentations at the North Dakota Demographics Conference. Some of this may be updated in the next few days because the Census Bureau released new data today that I am still working through even as I write this. Multitasking with writing blog posts and computer code is one of my skills. Ask JT about it on his radio show sometime.