Here's how we ranked the economies of the 50 US states and DC

In our ranking of the economies of the states and DC, we looked at six measures of economic health.

Each measure was rescaled to allow us to compare them to one another. Technically, we calculated z-scores for each state on each measure, which rescales each variable based on its average and standard deviation.

To make the combined ranking, we added together the six indicator z-scores for each state to create an overall economic index.

Here are the sources for each of our measures:

• November 2018 unemployment rate: The most recent unemployment rate for each of the states and DC came from the Bureau of Labor Statistics' Local Area Unemployment Statistics program.
• Percent change in nonfarm payroll jobs, November 2017-November 2018: We calculated the rate of increase or decrease in nonfarm payrolls, also taken from the Local Area Unemployment Statistics data.
• Q2 2018 GDP per capita: Every quarter, the Bureau of Economic Analysis releases its estimates of the GDP of each state and DC. We used this and the Census Bureau's estimates for the July 1, 2017, population of each state to calculate GDP per person.
• Q2 2018 GDP growth: The BEA also releases estimates of GDP growth for the states and DC every quarter in the above release.
• November 2018 average weekly wage: We took this from the Bureau of Labor Statistics' State and Metro Area Employment, Hours and Earnings program.
• Change in average weekly wage, November 2017-November 2018: This also came from the State and Metro Area Employment, Hours, and Earnings program.

NOW WATCH: The founder of the World Economic Forum shares what he sees as the biggest threat to the global economy