A torn scrap of paper which gives estimates of times worked for Fred Holmes, Joe Simpson, John Simpson, William Baird and William Case

A torn scrap of paper which gives estimates of times worked for Fred Holmes, Joe Simpson, John Simpson, William Baird and William Case. Much of the text is missing. This is signed by Fred Holmes, Dec. 1857.

Engineer services in the marsh lands drainage for the months of December, 1855 and January, February and March of 1856 to Frederick Holmes and Joseph Simpson

Engineer services in the marsh lands drainage for the months of December, 1855 and January, February and March of 1856 to Frederick Holmes and Joseph Simpson. Signed by S.D. Woodruff, April 1, 1856.

Engineer services in marsh lands drainage for the months of April, May and June, 1856 to Fred Holmes, Joseph Simpson and Thomas Baird

Engineer services in marsh lands drainage for the months of April, May and June, 1856 to Fred Holmes, Joseph Simpson and Thomas Baird. Signed by S.D. Woodruff, June 30, 1856.

Engineer services in marsh lands drainage for the months of July, August and September, 1856 to Fred Holmes, Joseph Simpson, Thomas Baird and Rose Osborne

Engineer services in marsh lands drainage for the months of July, August and September, 1856 to Fred Holmes, Joseph Simpson, Thomas Baird and Rose Osborne. This is signed by S.D. Woodruff, Oct. 1, 1856.

Engineering services in marsh lands drainage for the months of January, February, March and April for Fred Holmes, Joseph Simpson, D. Davidson, Rose Osborne, Henry Wilson and William Baird

Engineering services in marsh lands drainage for the months of January, February, March and April for Fred Holmes, Joseph Simpson, D. Davidson, Rose Osborne, Henry Wilson and William Baird. This is signed by S.D. Woodruff, May 1, 1857.

Engineering services in marsh lands drainage for the months of May, June, July and August 1857 for Fred Holmes, Joseph Simpson and William Baird

Engineering services in marsh lands drainage for the months of May, June, July and August 1857 for Fred Holmes, Joseph Simpson and William Baird. This is signed by S.D. Woodruff, Aug. 31, 1857.

Compositional data and Simpson's paradox

Simpson's paradox, also known as amalgamation or aggregation paradox, appears when dealing with proportions. Proportions are by construction parts of a whole, which can be interpreted as compositions assuming they only carry relative information. The Aitchison inner product space structure of the simplex, the sample space of compositions, explains the appearance of the paradox, given that amalgamation is a nonlinear operation within that structure. Here we propose to use balances, which are specific elements of this structure, to analyse situations where the paradox might appear. With the proposed approach we obtain that the centre of the tables analysed is a natural way to compare them, which avoids by construction the possibility of a paradox. Key words: Aitchison geometry, geometric mean, orthogonal projection

El oficio de maestro de Gimnasia : una mirada a las prácticas gimnásticas a través de los Simpson.

Resumen tomado de la publicación

Tintín, Bart Simpson y los Fanhunters : ¿de qué hablarían entre ellos?

Resumen basado en el que aporta la revista.

La paradoja de Simpson y la interpretaci??n de los resultados de las evaluaciones del rendimiento acad??mico en el sistema educativo

Se pretenden alcanzar los siguientes objetivos: explicar en qu?? consiste la paradoja de Simpson, explicar que la paradoja de Simpson puede aparecer cuando la variable dependiente de continua; resaltar que la interpretaci??n de los resultados de una evaluaci??n puede ser err??nea si este fen??meno se da; presentar un caso en el que dicha paradoja aparece en la reciente evaluaci??n de la Secundaria del Sistema Educativo Espa??ol, y comprobar que la correcta interpretaci??n de los resultados puede ser contraria de lo que en principio pudiera parecer.

Toulouse-Lautrec in Catford: new information about 'La Chaine Simpson'

A note on Toulouse-Lautrec's visit in June 1896 to the Catford Cycle Track and the posters he produced afterwards: Cycle Michael and La Chaîne Simpson.

Mensuração do volume atrial esquerdo pelo método biplanar de Simpson em cães portadores da doença mixomatosa da válvula mitral

Pós-graduação em Medicina Veterinária - FCAV

Simpson's Paradox: A Graphical Treatment

It is possible for a pair of dichotomous, categorical variables to have an overall positive association (say) in a stratified population, and at the same time be negatively associated in every stratum. This (essentially) is Simpson's paradox. A graphical device, the risk diagram, provides insight into Simpson's paradox and related concepts.