WSJ: Numbers Guy

The Numbers Guy examines numbers in the news, business and politics. Some numbers are flat-out wrong or biased, while others are valid and help us make informed decisions. Carl Bialik tells the stories behind the stats, in daily updates on this blog and in his column published every other Friday in The Wall Street Journal. Carl, who holds a degree in mathematics and physics from Yale University, also cowrites The Daily Fix, a sports column on He welcomes your comments at .

WSJ: The Numbers
The Numbers
copyright © 2015 Dow Jones & Company, Inc.
The Wall Street Journal examines the way numbers are used, and abused.

Playing With Numbers: A Fantasy Football Tip
With the first batch of the National Football League's preseason games in the books, it's that time for every armchair general manager to begin assessing the draft, keepers and a strategy for the season. Thanks to a new tool, we can incorporate injury risk into our planning.
Reader Mailbag: Crime and Employment
Worker advocates who support ban-the-box initiatives aimed at removing questions about criminal history from job applications fear the information will prejudice employers against capable employees who may have run afoul of the law. Dave's Killer Bread welcomes workers with rap sheets.
Behind The Numbers: Some Long Odds
What are the odds?
Behind The Numbers: Crime Data
According to multiple studies, roughly 1 in 3 American adults has been arrested or taken into police custody for something other than a minor traffic offense. But none of the data sets is complete, and some include duplicate or defunct records.
50 Cent Bankruptcy: By The Numbers
50 Cent filed 56 pages of financial information that’s required as part of his bankruptcy case. Find out whether the 40-year-old entertainer, whose real name is Curtis James Jackson III, is really as rich as he claims to be.
Behind The Numbers: GDP, the Sequel
When the Commerce Department releases its first reading of second-quarter gross domestic product this coming Thursday, there will also be a spate of annual revisions. This happens every year and serves to give more retroactive perspective on the U.S.'s economic growth trajectory.
Pi the Numbers: 22/7
In the day/month format that is used in some parts of the world, 22/7 is celebrated in some circles (ahem) as Pi Approximation Day, where 22 divided by 7 yields a quotient that represents pi.
Behind The Numbers: Baby-Name Data
One reason social scientists and others use U.S. baby names to study cultural trends is simply because the data are readily available.
Behind The Numbers: a PSA on SPFs
One thing fair-skinned beach lovers should keep in mind is that the surest way to prevent sunburn is to avoid exposure entirely: Seek out shade and wear protective clothing and sunglasses that filter out UV rays.
June Jobs Report – The Numbers
Jobs, wages, labor-force participation and more.