to your HTML Add class="sortable" to any table you'd like to make sortable Click on the headers to sort Thanks to many, many people for contributions and suggestions. Licenced as X11: http://www.kryogenix.org/code/browser/licence.html This basically means: do what you want with it. */ var stIsIE = /*@cc_on!@*/false; sorttable = { init: function() { // quit if this function has already been called if (arguments.callee.done) return; // flag this function so we don't do the same thing twice arguments.callee.done = true; // kill the timer if (_timer) clearInterval(_timer); if (!document.createElement || !document.getElementsByTagName) return; sorttable.DATE_RE = /^(\d\d?)[\/\.-](\d\d?)[\/\.-]((\d\d)?\d\d)$/; forEach(document.getElementsByTagName('table'), function(table) { if (table.className.search(/\bsortable\b/) != -1) { sorttable.makeSortable(table); } }); }, makeSortable: function(table) { if (table.getElementsByTagName('thead').length == 0) { // table doesn't have a tHead. Since it should have, create one and // put the first table row in it. the = document.createElement('thead'); the.appendChild(table.rows[0]); table.insertBefore(the,table.firstChild); } // Safari doesn't support table.tHead, sigh if (table.tHead == null) table.tHead = table.getElementsByTagName('thead')[0]; if (table.tHead.rows.length != 1) return; // can't cope with two header rows // Sorttable v1 put rows with a class of "sortbottom" at the bottom (as // "total" rows, for example). This is B&R, since what you're supposed // to do is put them in a tfoot. So, if there are sortbottom rows, // for backwards compatibility, move them to tfoot (creating it if needed). sortbottomrows = []; for (var i=0; i
Using the distributions we previously created to model the cumulative representation of income-earning individuals by age group for both 1995 and 2005, we've now extracted the number of income-earners by annual income! First, here's the distribution we've modeled for 1995:
And here's the distribution we've modeled for the same age groups and constant 2004 U.S. dollar income range for 2005:
We'll be comparing each age group's distribution in a later post (and introducing a tool that will allow you to find the number of income earners within any income range from $0 to $95,000 constant 2004 U.S. dollars, but in the meantime, here's a direct comparison of the totals for each age group across our income spectrum:
Here's something to think about over the Memorial Day Holiday - in this last chart, we see that a major demographic shift in the number of income-earning persons in the U.S. has occurred in this 10-year period, primarily in the Age 45-54 and Age 55-64 groups, which both saw the number of individuals within each age range leap by 34.6% and 38.2% respectively. Meanwhile, we see that by comparison, the number of income-earning individuals in the other age ranges were either flat or saw moderate decreases.
Since we've already established that the Age 45-54 range for both 1995 and 2005 represents the peak earning years for U.S. individuals, what do you suppose the effects of this demographic change would be upon the distribution of income within the United States during this period? In other words, what effect would this change within the U.S. workforce have upon income inequality in the United States?
Update: For the curious, the two charts at the top of this post show the number of individuals within each consecutive $100 interval from $0 to $95,000 in constant 2004 U.S. dollars!
Labels: income, income distribution, income inequality
Welcome to the blogosphere's toolchest! Here, unlike other blogs dedicated to analyzing current events, we create easy-to-use, simple tools to do the math related to them so you can get in on the action too! If you would like to learn more about these tools, or if you would like to contribute ideas to develop for this blog, please e-mail us at:
The S&P 500 at Your Fingertips
Mapping S&P 500 Performance, Since 1871
Should You Trade In Your Gas Guzzler?
What Are the Chances Your Marriage Will Last?
Reckoning the Odds of Recession
Your 2009 Paycheck
Tipping Around the World
Revisiting the Lottery
Estimating Your Life Expectancy
Connecting the Dots for Personal Income Taxes
First Time Visitor to Political Calculations?
On the Moneyed Midways
A Lot, But Not All, of Our Tools
Political Calculations' Recession Probability Track shows the probability that the U.S. economy will be in recession 12 months from the indicated date (shown in red) while revealing the probability trend over the past four years.
Previously, the probability of recession peaked at 50% on 4 April 2007, which means that March-April 2008 was the most likely period in which the NBER would have found the U.S. to be in recession.
As it happens, they almost did. The NBER instead chose December 2007 as the beginning month of the most recent recession (we had found a 46% probability for a recession beginning in that month!)
Political Calculations is also the online home of On the Moneyed Midways (aka OMM), a review of the best posts contributed to the week's best business and money-related blog carnivals. More than that, we also name one post in each edition as being The Best Post of the Week, Anywhere! and at the end of each year, we name The Best Post of the Year, Anywhere! as well as identifying the best blogs we found during the course of the year!
The link below will take you to the running index containing our most recent back issues (you can easily navigate the index to find older editions.)
This site is primarily powered by:
Visitors since December 6, 2004:
The tools on this site are built using JavaScript. If you would like to learn more, one of the best free resources on the web is available at W3Schools.com.
ZunZun - Exceptional regression analysis tool.
Wolfram Integrator - Solve integrals. Do calculus!
Create a Graph - Easy-to-use basic graph-making tool.
Many Eyes - Data visualization extraordinaire!