June 13, 2017
The two points of view represented below are both well reasoned, conflicting, and cogent, but can they both be right? The experts currently disagree, but maybe one day the question will be answered definitively. For now, it makes for an interesting debate, and only time will tell who is right. Today’s answer may not be tomorrow’s answer.

A key question is how much data does one need in order to make smart investment decisions. Those who believe best decisions come from analyzing tons of data lean towards computer algorithms, while those who think smart evaluations don’t require looking at every piece of data lean toward human understanding and interpretation.

The term “quants,” refers to those quantitative analysts who crunch the number and are more reliant on computers and algorithms.

Why Brains Are More Reliable Than Machines – WSJ

Quants_ Best Strategy Is From the 17th Century – WSJ

Tags: AI in the news, algorithms for investing, big data, Quants, stock picking

Posted in applied engineering, computer article, computer investing, Finance, Newspaper article, science news, Statistics | Leave a Comment »

April 25, 2017
Venture Capital firms, that is, firms that invest in funding start-ups, early stage companies, and companies with good growth potential, are always on the hunt for the next great opportunity. The article below talks about the trend away from people who are expert in spotting such opportunities, and towards computer based analytics which is believed to be faster and better at finding the “next big thing.”

Venture-Capital Firms Use Big Data to Seek Out the Next Big Thing – WSJ

Tags: analytics, data mining, economic modeling, math education, mathematical modeling

Posted in coding education, computer article, computer education, Econ 101, economics, jobs in computers, Math and the market, math article, math in the news, math news, Newspaper article, Statistics, statistics in news, Statistics Readings | Leave a Comment »

April 25, 2017
“Adding Math To Save Humanities” is the title of a sidebar article in the Wall Street Journal, April 25, 2017, about liberal arts colleges trying to add more mathematical contents to traditional liberal arts courses to better prepare their graduates for the work world. Along with the Big Data revolution comes the need for employees in many diverse fields to be able to analyze data and to “rigorously and effectively” use data to answer questions. “Emory University in Atlanta has created a degree that marries traditionally qualitative disciplines such as anthropology and English with math and statistics.” This shift is in part to due students enrolling in liberal arts programs in smaller numbers. Click below for the full article.

saving liberal arts

Tags: education, liberal arts and math, math education, math news

Posted in computer education, General interest, jobs in computers, Math and the market, math article, math education, math in the news, math news, Newspaper article, Statistics, statistics in news | Leave a Comment »

March 30, 2017
In order to make any predictions in any area of study, one must make assumptions about the data, and what is likely to affect it going forward. That is why statistical studies often make use of such statements as:

“At the current rate…”

“If things continue as in the past…”

“Based on what we know now…”

“It is reasonable to assume…”

“If history is a guide…”

“If things don’t change…”

But things do change, and that is what makes predicting the future so difficult, and so vulnerable to known and unknown biases. While these caveats are unavoidable, and need to be stated, they require the consumer of the statistics to have a reasonable amount of skepticism and a large amount knowledge.

A quote in a The Great Race by Levi Tillemann states that “The available supply of gasoline, as is well know, is quite limited and it behooves the farseeing men of the motor car industry to look for likely substitutes.” This quote is attributed to Thomas J. Fay, in 1905, in a magazine call *Horseless Age*.

Tags: data mining, economics, math and finance, mathematical modeling, medical device

Posted in General interest, math article, Statistics, Statistics Readings | Leave a Comment »

March 30, 2017
“An innovation aiming to streamline how air passengers reconnect with their lost luggage comes with a major asterisk: airline would no longer count the luggage as lost.” Using text messaging, airlines could advise you that your bags did not make your flight, and you can give them instructions via text where they should send the lost bags.

DOT statisticians will not count those bags as lost, and airlines can maintain goods stats while perhaps not performing so well. You say, “They’re not lost, because we know where they are.” I say, “They’re lost because they are not where they belong.”

Whoever said statistics was an exact science?

For the full article in the Wall Street Journal, click here:

counting Lost Baggage

Tags: computers, data mining, education, technology

Posted in economics, math article, math education, math in the news, statistics in news | Leave a Comment »

March 3, 2017
Economics is so basic and essential for good citizenship and good personal decisions, that it is a shame high school students can graduate without even being exposed to the subject. An article by high schooler Benjamin Auslin from Montgomery Blair High School in Silver Spring, Maryland, makes a strong argument that understanding supply and demand, the time value of money, return on investment and the basics of personal finance are skills that would well serve the graduates and society.

economics-shouldnt-be-an-elective-wsj

Tags: economics, Economics news, education, education research, good advice

Posted in advocacy, Econ 101, economics, General interest, Internet article or paper, Math and the market, math article, math education, math in the news, math news, Newspaper article | 1 Comment »

January 13, 2017
This beautiful example of single point perspective is printed as a negative image digitally. The concept of a negative in math can be related to negative in photography if we think of it in terms of “opposite.” This could be a teaching aid.

math-photo-2

Tags: architecture photo, math photo, negative of a photo, perspective, single point perspective photo

Posted in Math meets art, Picture of the week | Leave a Comment »

January 4, 2017
Big Data could provide a big advantage to investors, but when the data is wrong or misinterpreted, it can be catastrophic.

“Credit card data sold to investors is making shares of retailers behave strangely, especially when the data gets things wrong.” So begins an article in the Wall Street Journal ‘Big Data Adds Up to Trading Distortions.’ The first example is about Tailored Brands (owner of Men’s Warehouse and Joseph A. Bank) stock that shot up nearly 40% in one day when investors realized that the data they were basing their decisions on was inaccurate.

For the full article: how-credit-card-data-might-be-distorting-retail-stocks-wsj

Tags: data mining, Finance article, math and finance, Math in the news, statistics in the news

Posted in Finance, Math and the market, math article, math in the news, statistics in news | Leave a Comment »

December 26, 2016
The U. S. Air Force Academy Chapel in Colorado Springs is an example of a very mathematical theme in architecture. Symmetry, geometry along with the theme of jet aircraft.

Tags: art and architecture, art and math, math and photography

Posted in General interest, geometric art, geometric photography, Math meets art, mathematical photography, Picture of the week, Pictures, Uncategorized | Leave a Comment »

November 11, 2016
The following document shows how to enter and edit data on the Ti-84 and Ti-86 calculators and how to do some basic statistics with the data. More documents on this topic to follow. This is an ideal handout for teacher to stats students.

doing-statistics-on-the-ti

Tags: statistical modeling, statistics on calculator, using a calculator

Posted in coding education, computer article, Statistics, Statistics Readings | Leave a Comment »