Posts filed under “Mathematics”

Doodling in Math: Sick Number Games

I don’t even know if this makes sense. Boo cold.

Doodling in Math Class videos:

Category: Mathematics, Weekend

US Map: Rent vs. Buy

By the time Case Shiller drops today at 9am, I will be very busy (lounging on the beach). Expections are for the biggest drop in home prices a year. In the meantime, you can check out this cool interactive Housing map, via Trulia. As you click around in this map, keep in mind the 4…Read More

Category: Digital Media, Mathematics, Real Estate

No, 1 in 4 Homeowners Are Not Underwater…

Earlier this week, I pointed out Diana Olick’s technically accurate but misleading post about the Housing Unoccupied Rate. (US Homeowner Vacancy Rate is 2.7%, Not 11%). I expect to revisit that int he future in much greater detail. Today’s statistics lesson is from an error at HuffPo. It begins with the statement “Nearly one in…Read More

Category: Data Analysis, Mathematics, Real Estate

US Homeowner Vacancy Rate is 2.7%, Not 11%

I don’t know what to make of this bizarre headline from Diana Olick, who made the claim that “Nearly 11 Percent of US Houses Empty.” > Source:  CNBC > That 11% number is about 4X of what is should be, according to the data wizards at Census, and Economagic, who note that the rate was…Read More

Category: Data Analysis, Mathematics, Real Estate

Is China Really Funding the US Debt?

I keep hearing people erroneously claim that China is funding US deficit spending. It seems that every eejit with a fundamental misunderstanding of mathematics (and access to Xtranormal‘s animated talking bears) has been pushing this concept. It turns out to be only partially true — and by partially, I mean 7.5% true. But that means…Read More

Category: Credit, Mathematics, Really, really bad calls

Population 7 Billion

Population 7 Billion” is a 7-part National Geographic series on global population.

With the worldwide population expected to exceed seven billion in 2011, National Geographic magazine offers a 7-part series examining specific challenges and solutions to the issues we face. The magazine introduces the series with its January cover story “7 Billion,” offering a broad overview of demographic trends that got us to today and will impact us all tomorrow. The first in-depth story will appear in the March issue, focusing on humans’ impact on the planet’s geology. Other stories will follow throughout 2011.

See photos from 7 Billion:

Category: Mathematics, Video

Mathematical Doodling

Fantastic mathematical doodling:

Site is here:

Hat tip NY Mag

Category: Mathematics, Video

Estimates of Wealth Distribution Are Widely Wrong

I’ve been meaning to get to this chart for some time, so I am glad Good reminded me to: The actual United States wealth distribution plotted against the estimated and ideal distributions across all respondents. The actual United States wealth distribution plotted against the estimated and ideal distributions of respondents of different income levels, political…Read More

Category: Current Affairs, Mathematics, Psychology

Asymmetrical Motivation & The .299 Hitter

There is a fun mathematical discussion in the NYT Sports section today worth looking at. It turns out that major league hitters on the verge of a 3 handle batting average — .300 — hit an astounding .463 on their last at bat of the season: “Two economists at the Wharton School of the University…Read More

Category: Mathematics, Sports

Thaler on Tax Cuts

University of Chicago Behavioral Economist Richard Thaler drops some hard analysis on the tax-cut-at-any-price crowd in his NYT column this week: “Want to give affluent households a present worth $700 billion over the next decade? In a period of high unemployment and fiscal austerity, this idea may seem laughable. Amazingly, though, it is getting traction…Read More

Category: Mathematics, Taxes and Policy