Tag Archives: Introductory statistics

Is there anything we can do to avoid the flu?

In many places, influenza activity peaks during the period in between December and February. What are some of the best practices to reduce the spread of the flu and to minimize the risk of catching it? The standard recommendations are: … Continue reading

Posted in Observational Studies, Statistical studies | Tagged , , , | Leave a comment

Looking at Spread

In the previous post Two Statisticians in a Battlefield, we discussed the importance of reporting a spread in addition to an average when describing data. In this post we look at three specific notions of spread. They are measures that … Continue reading

Posted in Descriptive statistics, Statistics | Tagged , , , , , , , , , , | Leave a comment

Two Statisticians in a Battlefield

Two soldiers, both statisticians, were fighting side by side in a battlefield. They spotted an enemy soldier and they both fired their rifles. One statistician soldier fired one foot to the left of the enemy soldier and the other statistician … Continue reading

Posted in Descriptive statistics, Statistics | Tagged , , , , , , , , , , , | Leave a comment

The Tax Return of Mitt Romney

Mitt Romney is currently a candidate for the 2012 Republican Party nomination for U.S. President. He recently, bowed to pressure from another presidential candidate in the Republican Party, had to release his past tax returns. The release of these tax … Continue reading

Posted in Descriptive statistics, Statistics | Tagged , , , , , , , | Leave a comment

What Are Helicopter Parents Up To?

We came across several interesting graphics about helicopter parents. These graphics give some indication as to what the so called helicopter parents are doing in terms of shepherding their children through the job search process. These graphics are the screen … Continue reading

Posted in Commentary, Descriptive statistics, Statistical studies, Statistics, Statistics In Action | Tagged , , , , , | Leave a comment

Another Look at LA Rainfall

In two previous posts, we examined the annual rainfall data in Los Angeles (see Looking at LA Rainfall Data and LA Rainfall Time Plot). The data we examined in these two post contain 132 years worth of annual rainfall data … Continue reading

Posted in Descriptive statistics, Exploratory Data Analysis (EDA), Statistics | Tagged , , , , , , , , | Leave a comment

Is College Worth It?

Is college worth it? This was the question posed by the authors of the report called College Majors, Unemployment and Earnings, which was produced recently by The Center on Education and the Workforce. We do not plan on giving an … Continue reading

Posted in Commentary, Descriptive statistics, Exploratory Data Analysis (EDA), Observational Studies, Statistical studies, Statistics | Tagged , , , , | Leave a comment

Cryptography and Presidential Inaugural Speeches

Given a letter in English, how often does it appear in normal usage of the English language? Some letters appear more often than others. For example, the last letter Z is not common. The vowels are very common because they … Continue reading

Posted in Descriptive statistics, Exploratory Data Analysis (EDA), Probability, Statistics, Statistics In Action | Tagged , , , , , | Leave a comment

Which Car Rental Company Is More Expensive, Budget or Avis?

Any “budget” conscious consumer/traveler would want to find a good deal wherever and whenever he or she can, especially when it comes to airfare and rental cars. In tough economic times, bargain hunting is the norm rather the exception. This … Continue reading

Posted in Sampling Distributions, Statistical Inference, Statistics | Tagged , , , , , , , , , , , | Leave a comment

Benford’s Law and US Census Data, Part II

The Benford’s law is a probability model that is a powerful tool for detecting frauds and data irregularity. The first digit (or leading digit) of a number is the leftmost digit and can only be 1, 2, 3, 4, 5, … Continue reading

Posted in Probability, Statistical Inference, Statistics | Tagged , , , , , , , , , , | Leave a comment