Pages
Archives

Recent Posts
Categories
 5number summary
 689599.7 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
 Chisquare goodness of fit
 Chisquare statistic
 Chisquare test
 Completely Randomized Experimental Design
 Conditional distribution
 Confidence Interval
 Confounding
 Correlation
 Critical Value
 Descriptive statistics
 Diabetes
 DoortoBalloon 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
 LeastSquares Regression
 Lurking variables
 Marginal distribution
 Matched Pairs ttest
 Mean
 Median
 Normal Curve
 Normal Distribution
 Null Hypothesis
 Observational studies
 OneSample tProcedures
 OneSample ttest
 pvalue
 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
 ttest
 Tests of Significance
 The law of large numbers
 Third Quartile
 Time Plot
 Twoway tables
 Uniform Distribution
 Warren Buffet
Tag Archives: Resistant numerical summary
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
The Safest Driving City in America
Which city in America has the worst drivers? When I asked this questions, many people guessed New York or Los Angeles. How about the city with the safest drivers? According to a recent report released by The Allstate Insurance Company, … Continue reading
Choosing a High School
Many parents try to find the best high school for their children. Many variables are usually involved in choosing a school. One criterion is to look at successes of the graduates of a school. One measure of success may be … Continue reading
When Bill Gates Walks into a Bar
The mean of a data set is obtained by summing the data elements in the data set and divided by the total number of data elements (what most people think of as average). The median of a data set is … Continue reading
Looking at LA Rainfall Data
This is a demonstration of using descriptive statistics (using graphs and numerical summaries) to make sense of a onevariable data set (the seasonal rainfall data in Los Angeles). The techniques we use are frequency distribution, histogram, and various numerical summaries. … Continue reading
Weight Distributions of Super Bowl Players
How much do Howard Green and Ryan Pickett weigh (both of Green Bay Packers)? How much does Chris Kemoeatu weigh (Pittsburgh Steelers)? These are the heaviest players in the two teams for the Super Bowl 2011. Their weights listed at … Continue reading
A Statistical Look at the Amendments to the United States Constitution
The Constitution of the United States is the supreme law of the United States. The framers of the Constitution were aware that changes to the Constitution would be necessary from time to time. A twopart process was set up for … Continue reading