Statistical Consultants Ltd

Blog

2015

2014

#	Image	Title	Description
1		Unlisted Videos	A website designed, developed and owned by Statistical Consultants Ltd, for submitting, searching for, and watching unlisted YouTube videos.

2013

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1		Free Alternatives to Excel	A list on L-Lists, of links to free spreadsheets software.

2012

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10		Commercial Statistical Software	Statistics related lists, on L-Lists.
9		International Data Sources
8		Open Access Statistics Journals
7		Statistics Journals
6		National Statistics Offices
5		Free Statistical Software
4		L-Lists	The collaborative list making website designed, developed, and owned by Statistical Consultants Ltd.
3		Titanic Fare Data	Two blog posts about the Titanic, which include: Summary tables related to the survival and fare data. A LOESS smoother applied to a scatter plot of proportion survived vs age. A decimilisation formula applied to the Titanic fares (that converts the fares from the old pre-decimalise currency to the modern decimalised currency). An estimate of the fares in terms of 2012 prices.
2		Titanic Survival Data
1		ICT Development Index 2010	A blog post about: The information and communication technology index, and its nonlinear relationships with GDP per capita (PPP). The nonlinear relationship between IDI (ICT Development Index) and IPB (ICT Price Basket).

2011

#	Image	Title	Description
6		Statistics about South Sudan
5		Benford’s Law Explained	A series of blog posts about Benford's Law / Benford's Distribution, a distribution that the leading digits certain types of data sets typically conform to.  Benford's Law has been used to assist with accounting fraud investigations.
4		Benford’s Law and Accounting Fraud Detection
3		The Rank-Size Rule of City Populations	The rank-size rule of city populations, is a commonly observed statistical relationship between the population sizes and population ranks of a nation’s cities.
2		Axiomatic Analysis of Elementary Indices	A continuation of the blog post series about index numbers.
1		Elementary Indices

2010

#	Image	Title	Description
27		Different ways of measuring the Consumer Price Index (CPI)	A series of blog posts about the calculation and properties of index numbers, which are used to derive various economic and financial statistics such as the CPI (consumer price index).
26		Index Numbers
25		TANAGRA: A free data-mining program	A review for the free data mining software, TANAGRA.
24		The Galton Box	The Galton Box was invented by Sir Francis Galton in the 19th century, to demonstrate the central limit theorem and the binomial and normal distributions.
23		How the world separates its digits	A table showing the style(s) that each country uses to separate the digits of its large numbers ( e.g. 1,000,000 10,00,000 10.000.000 etc).
22		How the world separates its decimals	A thematic map showing which countries denote a decimal separation with a point, and which denote a decimal separation with a comma.
21		PSPP: A free alternative to SPSS	A review for PSPP, a free statistical software that is based on SPSS.
20		Utility Functions
19		Social Welfare Fuctions
18		Cross-validation	A series of three blog posts, each outlining the steps taken to perform a particular statistical simulation technique.
17		Bootstrapping
16		Monte Carlo Methods
15		Total Least Squares	Total Least Squares is an alternative regression modelling technique to the conventional Ordinary Least Squares (OLS).  It involves minimising the sum of the squared diagonal residuals, instead of the sum of the squared vertical residuals.
14		Prosecutor’s Fallacy	An explanation of various statistical fallacies that can and have resulted in miscarriages of justice.  The Sally Clark Case (United Kingdom) is used as an example.
13		The German Tank Problem	A simple formula the Western Allies used during World War II, that predicted with great accuracy, the number of German tanks being produced, based on the serial numbers of captured or destroyed German tanks.
12		R-estimators	A series of four blog posts about alternatives to the OLS regression modelling technique, that are robust to departures from the normality assumption.
11		L-estimators
10		M-estimators
9		LAD: An Alternative to OLS
8		Gambler’s Fallacy	Gambler’s fallacy is a type of faulty statistical reasoning, common to people with gambling problems.
7		The Monty Hall Problem	A simple probability puzzle (based on a game from the American gameshow Let’s Make a Deal), that has managed to fool many people, including those highly educated in fields that rely heavily on mathematics.
6		Condorcet’s Jury Theorem	Condorcet's formula based on the cumulative binomial distribution, that predicts the probabilty of a correct verdict based on: The number of jurors The probability of each juror being correct The number of jurors needed for a majority
5		Survey Sampling Methods	A description of the main categories of survey sampling method.
4		Life expectancy at birth versus GDP per capita (PPP)	A graph and statistical model of the nonlinear relationship betwen life expectancy (at birth) and GDP per capita (PPP).
3		Gretl: A free alternative to EViews	A review of Gretl; a free econometrics software, that is very similar to EViews.
2		Regression	Regression is a statistical modelling technqiue involving the fitting of a mathematical equation to a set of data.  The simplest example is fitting a straight line of best fit, to a scatterplot.
1		Battle of Britain Casualty Data	The casualty data tables displayed at the end of the movie Battle of Britain (1969).