undercount

[ verb uhn-der-kount; noun uhn-der-kount ]

verb (used with object)

to count less than the full number or amount of: The mayor claimed the census had undercounted the city's population.

noun

Origin of undercount

First recorded in 1950–55; under- + count¹

The Bureau of Labor Statistics has flagged undercounts in the official unemployment rate before.
Fed chair: Unemployment rate was closer to 10 percent, not 6.3 percent, in January | Rachel Siegel | February 10, 2021 | Washington Post
Still, the reports probably represent a dramatic undercount because it takes time and initiative for busy employees to file them.
Sneezed on, cussed at, ignored: Airline workers battle mask resistance with scant government backup | Michael Laris | January 1, 2021 | Washington Post
“That number is a vast undercount,” said Homer Venters, the former chief medical officer at New York’s Rikers Island jail complex.
Coronavirus is hitting prisons and jails hard—1 in 5 inmates has had COVID, and 1,700 have died | Bernhard Warner | December 18, 2020 | Fortune
The report said the total is likely an undercount as some of those infected declined to share their close contacts with health officials.
States With Few Coronavirus Restrictions Are Spreading the Virus Beyond Their Borders | by David Armstrong | December 1, 2020 | ProPublica
Researchers caution that this figure represents an undercount.
“We Don’t Even Know Who Is Dead or Alive”: Trapped Inside an Assisted Living Facility During the Pandemic | by Ava Kofman | November 30, 2020 | ProPublica

Outside clearings do not undercount outside check deposits nearly to the extent that Professor Fisher assumes.
The Value of Money | Benjamin M. Anderson, Jr.
Do the figures that get into the "all other" deposits from those connected with the Stock Exchange undercount sales made there?
The Value of Money | Benjamin M. Anderson, Jr.

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