Not Seasonally Adjusted -

A report includes these predictable peaks and valleys. In contrast, seasonally adjusted data uses complex mathematical models (like X-12-ARIMA ) to "smooth out" these bumps, allowing analysts to see if a change is part of a larger trend or just the usual holiday rush. When Is NSA Data Most Important?

That night, the power in the motel went out. Then the cell towers. Then the road signs on Highway 200 changed, pointing toward a detour that led to a cliff. not seasonally adjusted

And somewhere in a basement office, a new “Not Seasonally Adjusted” division opened. Nora Chen was its director. She never smoothed a thing again. A report includes these predictable peaks and valleys

By dawn, she reached a truck stop with a payphone. She called the one person who’d understand: the old archivist in the Salt Lake City Federal Reserve basement. He still kept not-seasonally-adjusted records on microfiche. That night, the power in the motel went out