Pages
Archives
-
Recent Posts
Categories
- 5-number summary 68-95-99.7 Rule Alternative Hypothesis American roulette Bar Graph Benford's Law Bill Gates Binomial Coefficient Binomial distribution Binomial Experiment Birthday Problem Blaise Pascal Chevalier de Mere Chi-square goodness of fit Chi-square statistic Chi-square test Completely Randomized Experimental Design Conditional distribution Confidence Interval Confounding Correlation Critical Value Descriptive statistics Diabetes Door-to-Balloon Time Double blind Empirical Rule Expected value Experiments First Quartile Gambling Games of chance Games of dice Histogram Interquartile Range Introduction to statistics Introductory statistics Joint distribution Least-Squares Regression Lurking variables Marginal distribution Matched Pairs t-test Mean Median Normal Curve Normal Distribution Null Hypothesis Observational studies One-Sample t-Procedures One-Sample t-test p-value Paul Allen Percentile Placebo Probability Randomized Experiments Reasoning of Statistical Inference Regression Line Residual Plot Residuals Resistant numerical summary Sampling Distribution Scatterplot Standard Deviation Statistical Inference Statistics In Action Stemplot t-test Tests of Significance The law of large numbers Third Quartile Time Plot Two-way tables Uniform Distribution Warren Buffet
Tag Archives: Introductory statistics
The probability of breaking the bank
What is the likelihood of a gambler winning all the cash in a casino? A better question is: what is the likelihood of a gambler losing all the money he or she brings into the casino? There had been casinos … Continue reading
Is your public pool free from urine?
Some people believe that the answer to the question posted in the title of the blog post is no. Now there is evidence to back it up. The study profiled here also gives an indication of how serious the problem … Continue reading
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
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
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
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
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
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
Food scientists need to make sense of numbers
Food – the part of the economy that encompasses the production, the processing and the marketing of foods – is big business. In fact, the successes of the food industry depend in no small measure on the use of statistics. … Continue reading →