Big Mac Index Updated: Global Economics on a Sesame Seed Bun

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Late last week, The Economist updated the Big Mac Index. A slightly tongue-in-cheek analysis, the index uses McDonald's (MCD) ubiquitous burger to compare the relative valuation of worldwide currencies. Since the Big Mac, which is available in most countries, is priced so that it isn't too much of a drag on a mid-level worker's wallet, its price in each country offers an interesting glimpse into the cost of living. Here's a video explaining how it works:



Countries with undervalued currencies -- where the Big Mac is cheap -- are able to sell their exports for lower prices. On the other hand, products made in countries with overvalued currencies are more expensive on the worldwide market.

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Since the Big Mac index is based around the dollar, it's easy to see which countries would be a good bet for U.S. exports and which countries would be a hard sell. Not surprisingly, countries with export-oriented economies such as China, India, and South Korea tend to have undervalued currencies. On the other hand, Norway, Sweden, Brazil, Switzerland, Canada, and Venezuela all have highly overvalued currencies -- a factor that would make them more attractive for U.S. exports.

Given the United States' position as a global consumer, it isn't surprising that there are far more undervalued currencies on this index than overvalued ones. It makes sense for countries with strong manufacturing centers to keep their currencies undervalued, as it makes their exports cheaper -- and more attractive -- in U.S. stores.

If you're interested in seeing more, check out The Economist's interactive Big Mac map.

Here's a roundup of some of our favorite bizarre economic indicators. Let us know if we missed one!

42 PHOTOS
The 40 Most Unusual Economic Indicators
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Big Mac Index Updated: Global Economics on a Sesame Seed Bun

The Concept: People seek out others for first dates when the economy turns down and sentiment falls (they're lonely!).

The Proof: Match.com notices strong patterns on its site that correspond to economic downturns. The company said the fourth quarter of 2008 was its busiest period in seven years (its second busiest weekend ever came when the Dow dropped to five-year lows in November 2008). Match said traffic also spiked after the Sept. 11 attacks.


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The Concept: To escape the doldrums of reality, consumers flock to cinemas to see Jason Bourne and Harry Potter, regardless of the movie's quality.

The Proof: The box office posted one of its biggest years during the 2009 recession, before plateauing as markets eased. If there's a double-dip, expect popcorn sales to be up again.


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The Concept: Because of high funeral costs, family members never claim the bodies of the deceased so the state will pay for costs.

The Proof: In 2009, at the height of the financial crisis when non-farm payrolls were falling by more than half a million a month, Detroit logged a massive increase in the number of unclaimed bodies at its morgue. State payouts for burials nearly doubled over a two month period compared to just a year earlier.


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The Concept: The more the Drudge Report focuses on business stories, the more likely the stock market is to have hit a bottom.

The Proof: Bespoke Investment Group recently tracked the number of financial headlines on the Drudge Report front page and compared them to the S&P 500. Turns out bottoms in the S&P 500 correlated to the number of business headlines on Drudge.


By Business Insider

The Concept: The quicker salesmen are to discount cars on their lots, the weaker the economy.

The Proof: No actual data exists on closing times. But discounts increased astronomically in 2008 when Ford, GM and Chrysler were left with excess inventories.


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The Concept: Perhaps the gloomiest of economic indicators is the bicycle fatality indicator, which increases during hard times.

The Proof: In the U.K., the Department for Transport said fatalities jumped 12 percent year-on-year as austerity measures took effect in 2011. Cycling deaths also surged 58 percent during the Great Depression, before retreating.


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The Concept: Markets should rally during the Summer Games as the games distract investors from gloomy headlines.

The Proof: Bespoke Investment Group tracked the Dow Jones back to 1900 and found positive returns in 18 of the last 26 games. Bespoke based each year's time frame as that between the opening and closing ceremonies.


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The Concept: Countries where the average male organ is, well, average, have stronger economies than those with the largest and smallest.

The Proof: Tatu Westling of the University of Helsinki conducted the study and found the correlation. How does he explain it? Salivary testosterone levels have been shown to be positively associated with risk-taking behavior. Assuming these links hold it would suggest that male organ acts as a proxy for risk-taking. Therefore, countries that engage in too much or too little risk taking underperform countries that take moderate risk.


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The Concept: With fewer Americans spending on discretionary items, sales of high-end handbags made of alligator or crocodile, which can retail upwards of $20,000, fall.

The Proof: In 2009, alligator farms in Louisiana faced solvency issues as the market all but dried up. Alligators kept producing, but their skins were not needed or purchased by luxury designers.


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The Concept: The Guns-to-Caviar index measures the ratio of money spent on military jets to that on private jets, or the relative amount of anxiety and elation among the global elite.

The Proof: Richard Aboulafia, the creator of the index, says, "Defense budgets rise with threats and perception of threats, and cash filters down, with planes typically delivered two years after they are ordered."


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The Concept: The intensity of Marine Corps advertisements evolve with hiring trends. During tough times, civilians who can't get work are more likely to enlist. But if too many people sign up, the Marines toughen up their videos to scare off potential recruits.

The Proof: Remember those stately Marine commercials a young recruit rock climbing sans gear? Well, those are out. With Marine recruitment up and the size of the corps declining, new commercials are out that aren't particularly inviting.


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The Concept: To save money, parents with newborns, babies and toddlers try to cut back on diaper costs by changing their children fewer times throughout the day.

The Proof: According to data from Symphony IRI, in 2011, diaper rash cream sales volume increased 2.8 percent while sales of disposable diapers tumbled 9 percent.


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The Concept: People stop getting cosmetic surgery as the economy begins to falter. The reasons: 1. If job cuts are coming, people want to save for futures needs; 2. Even if job cuts are not coming, employees don't want to take off from work for elective surgery, preferring to stay in the their bosses' good graces.

The Proof: Plastic surgery revenue in the U.S. declined 9 percent in 2008 as the economy headed into contraction, with the American Society of Plastic Surgeons expressly citing the bad economy.


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The Concept: The nationality of the woman featured on Sports Illustrated's annual swimsuit issue dictates how American markets will perform over the year. If an American is chosen, the theory goes, the S&P 500 will outperform historical returns.

The Proof: Last year, Kate Upton was on the cover, and the S&P 500 beat its historical average. This year, she's on the cover again.


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The Concept: Won't be able to make it out to that bar after work? Apparently you aren't alone. Cash-strapped consumers often try to save money by drinking at home, sending pub sales and jobs downward.

The Proof: In Europe, 73 percent of jobs tied to the beer industry are outside breweries. These include jobs at bars and restaurants. From 2008 through 2010, employment in the beer industry fell 12 percent, versus 2 percent for Europe as a whole. Surely austerity measures feel much harder without that drink.


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The Concept: If a team from the old National Football League (now the NFC) wins the Super Bowl, the S&P 500 will gain for that year. However, if a team that can trace its roots to the old American Football League (now the AFC) wins, the market will decline.

The Proof: Believe it or not, analysts tell us it is widely accepted that this rule has been accurate around 80 percent of the time since 1970.


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The Concept: "Usually, in an economic downturn, heels go up and stay up -- as consumers turn to more flamboyant fashions as a means of fantasy and escape," IBM's Dr. Trevor Davis said.

The Proof: The low flapper shoes of the 1920s gave way to high pumps during the Depression, while stilettos surged over the dot-com bust. The most recent case shows some deviation. While dizzying heel heights walked the walk during the 2008-2009 crisis, they came down even as the U.S. economy sputtered at the end of 2010 into 2011.


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The Concept: Mosquito bites increase as more homes sit empty and ill-maintained. With higher grass and disheveled properties, back yards and swimming pools become breeding grounds for the pests.

The Proof: In 2009, the number of pools that had to be treated by the Maricopa County Environmental Services Department was up 60% from 2007, as foreclosed properties sat unattended. However, this metric may have become less useful as banks delayed foreclosing on homes in an effort to preserve the housing market.


By Business Insider

The Concept: Consumers move to canned goods to save on food expenses during hard times.

The Proof: During 2009, sales of baked beans soared 23 percent in the U.K. as consumers fell back on buying staples instead of going out for dinner.


By Business Insider

The Concept: Official recessions coincide with a surge in the number of times the word "recession" appears in print -- well before the two quarter delay it takes for a country to call it.

The Proof: The Economist tracks the word's use in The Wall Street Journal and Financial Times and has done a great job of highlighting the start date of recessions, including those in 1990, 2001 and 2007.


By Business Insider

The Concept: There are financial advantages to being married, and going through a divorce can be expensive.

The Proof: A recent study demonstrated that couples are less likely to get divorced during a recession, and money is often the driving factor behind such decisions.


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The Concept: Two indicators here. The first: Men will buy ties to appear that they're working harder during difficult economic times. The second: Ties get slimmer during bad times and brighter when the economy starts to recover.

The Proof: In the U.K., with news that layoffs could be coming in 2007, sales of ties spiked as men tried to show employers that they came to do work. Width of the ties narrowed due to austerity measures during past wars, but current production abilities have seemingly put that indicator on hold. But anyone who has spent time in lower Manhattan will tell you that skinny ties are back.


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The Concept: During flush times women are more likely to get their hair cut, dyed and otherwise groomed more frequently. During recessions, they're more likely to take off extra inches to save on trips to the salon.


The Proof: Few analysts have latched on to the idea, but Japan's Nikkei magazine drew on data that revealed women cut their hair shorter as the economy fell in 1997.


By Business Insider

The Concept: In an effort to protect profit margins in rough times, restaurants downsize free offerings to kids like crayons and toys.

The Proof: In the middle of the 2009 recession, Red Robin halved the number of crayons kids were given to color with.


By Business Insider

The Concept: When the economy slips, consumers turn to the coupons in their Sunday circulars to try to cut costs on things like toothpaste, laundry detergent and groceries.

The Proof: In 2009, coupon redemption soared to 3.3 billion uses as consumers made an effort to save more at the market. During the second quarter of 2011, coupon use increased 4%, coupon processing firm Inmar says.

The Concept: Building booms will precede and then coincide with recessions, particularly when construction of a new tallest building is under way. Also, the taller the building, the longer the crisis.

The Proof: Barclays tracks these booms in its Barclays Skyscraper Index, and the results are surprising. During the Great Depression, three of the world's tallest buildings were under construction: 40 Wall Street, the Chrysler building and the Empire State building.


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The Concept: The Wall Street Journal calls Swiss watches "the ultimate discretionary luxury item."

The Proof: Swiss watch exports offer insights into the spending patterns of southeast Asia's "nouveau riche."


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The Concept: They're always busy with other clients, so getting a contractor to return a call can be a big hassle during a home renovation project. Thus, the quicker a contractor returns your calls, the worse the economy is doing.

The Proof: There isn't much hard data on this one. But it seems to make sense. Then again, if the economy is bad enough, you might not be able to afford that home makeover you want to commission.


By Business Insider

The Concept: Discovered by economist George Taylor in the 1920s, the Hemline Index predicts the market based on the length of women's skirts and dresses. The shorter hemline, the better the economy is looking.

The Proof: Just a myth, according to retail buyers. But some economists still point to the dreary lengths that came out following the financial crisis in 2008. And others worry that the maxi skirts out this summer are forecasting another downturn.


By Business Insider

The Concept: A sharp decline in the usage of cardboard means a recession is on the horizon, while increases indicate expansion.

The Proof: A large fraction of the world's non-durable goods gets shipped in cardboard containers, making this indicator rather straightforward. When cardboard box sales increase, it means companies are shipping a more goods to sell, and therefore employing more people. The largest producer of cardboard boxes in Europe, Smurfit Kappa, saw top line results fall by $269.9 million in 2008 from a year earlier, as operating profits declined 50 percent.


By Business Insider

The Concept: Men will forgo purchasing new underwear to save money during hard times.

The Proof: True. Even Alan Greenspan is on this bandwagon. Research firm Mintel estimated men's underwear sales fell 2.3 percent in 2009, the first decline since 2003.


By Business Insider

The Concept: When a company's CEO announces plans to build or move to a new world headquarters, sell your stock because it's about to drop.

The Proof: There are a number of corporate examples that both support and dispel this curse/indicator. There is a long history of new homes preceding collapse or difficulty, including The New York Times, AOL Time Warner and MySpace. On the other side, Apple just announced plans to build a new HQ, and followed that with a blowout quarter.


By Business Insider

The Concept: This one's pretty simple: GDP should correlate to the amount of garbage produced. The reason: if you create things you also have to throw other goods out.

The Proof: Of all categories that ship by rail, none correlate more tightly to GDP than waste. A 2010 Bloomberg piece by economists Michael McDonough and Carl Riccadonna put the correlation as high as 82 percent.


By Business Insider

The Concept: Waiting for the right time to invest? If you follow the Chinese Zodiac, you may want to wait for the lucky dragon, which will coincide with strong market returns.

The Proof: It's true. Market returns during the year of the dragon are second only to the rabbit at 7.7 percent. And there's some reason behind it: Many Chinese people time buying a house, marrying, and having children to the dragon.


By Business Insider

The Concept: Sales of aspirin and other headache medications are expected to increase as the economy heads toward rough times, as more people feel the stress.

The Proof: There's no historical data, but in 2008, Advil sales perked up 2 percent on an 8 percent surge during the fourth quarter, at the height of the nation's economic uncertainty.


By Business Insider

The Concept: Simple supply and demand: During boom times when women can find better jobs, there are fewer hookers and hourly prices for those remaining rise.

The Proof: Latvian sex workers have unfortunately been stuck in a rut. As the economy soured, rates fell as low as $60 for a night's work in 2009. This Baltic index is way more intuitive than that other Baltic index.


By Business Insider

The Concept: Billions of Google searches are conducted each day. So, the search giant thought, why not aggregate it all and see if it tells us something.

The Proof: Bingo. The nearly two dozen areas tracked, including unemployment, oscillate with the market.


By Business Insider

The Concept: Created by Leonard Lauder, chairman of Estee Lauder, the index shows that women turn to lipstick instead of more expensive indulgences like handbags and shoes during hard times.

The Proof: According to Investopedia, lipstick sales doubled during the recession following September 11.


By Business Insider

The Concept: The hotter your waitress, the closer the economy is to the brink. During boom times, physically attractive people can leverage their looks to get better paying jobs -- perhaps modeling or hosting corporate events.

The Proof: New York magazine thinks there's substance to this concept.


By Business Insider

The Concept: This index compares currency exchange rates in different countries relative to the local cost of a Big Mac. The index uses purchasing power parity to explain whether a currency is overvalued or undervalued.

The Proof: The Economist publishes this index annually and it shows a strong correlation between the dollar price of a Big Mac and GDP per person. The Economist notes that simply comparing prices is irrelevant, as labor costs vary greatly by country.


By Business Insider

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Bruce Watson is DailyFinance's Savings editor. You can reach him by e-mail at bruce.watson@teamaol.com, or follow him on Twitter at @bruce1971.
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