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Correlation Confidence Intvls 4+
MSYapps
Diseñada para iPad
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- USD 0.99
Capturas de pantalla
Descripción
Correlation is a quantitative tool commonly used by researchers to separate data sets into independent subgroups. Hypothesis testing determines whether or not the subgroups are numerically distinct. The degree to which the researcher can say the subgroups are distinct depends upon the overlap between the subgroups measured by the confidence interval estimates. The confidence interval estimates reflect the reality that there are errors in all quantitative estimates.
If correlation estimates were normally distributed, estimates of confidence intervals would be straightforward. However, correlation estimates are bound within the range of –1.0 to +1.0. The common technique devised by R.A. Fisher involves a nonlinear transformation of correlation functions into random variables that are approximately normal. The technique is known as Fisher's z-transformation and is formally expressed as ρ = tanh(z), where tanh( ) is the hyperbolic tangent function.
More simply, the transformed standard error, z, is defined as z = (1/2) ln[ (1 + ρ) / (1 – ρ) ]. The variance is a function of the number of paired samples in the sets being correlated and is defined as var(z) = 1 / (n – 8/3).
Thus, for example, the 95% confidence interval around a correlation estimate would be from (z – 1.96 σ) to (z + 1.96 σ) where σ = sqrt( 1/ (n – 8/3) ).
The iPad version allows you to add, retrieve, reorder, or delete data sets. Also, you may email, send via texting, and print data and results.
Novedades
Versión 8.1
- Corrected colors in Dark mode.
- Fixed problem that prevented sharing of PDF output.
- Various GUI tweaks.
Privacidad de la app
MSYapps, que desarrolló esta app, indicó que entre las prácticas de privacidad de la app, pueden incluirse el manejo de datos que se describe a continuación. Para obtener detalles, consulta la política de privacidad del desarrollador.
No se recopilan datos
El desarrollador no recopila ningún dato en esta app.
Las prácticas de privacidad pueden variar; por ejemplo, según tu edad o las funciones que uses. Obtén detalles
Información
- Vendedor
- Michael YOUNG
- Tamaño
- 1.9 MB
- Categoría
- Utilidades
- Compatibilidad
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- iPhone
- Requiere iOS 12.4 o posterior.
- iPad
- Requiere iPadOS 12.4 o posterior.
- iPod touch
- Requiere iOS 12.4 o posterior.
- Mac
- Requiere macOS 11.0 o posterior y una Mac con el chip M1 de Apple o posterior.
- Apple Vision
- Requiere visionOS 1.0 o posterior.
- Idiomas
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Inglés
- Edad
- 4+
- Copyright
- Copyright © 2013 Michael S. Young
- Precio
- USD 0.99
Compatibilidad
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Compartir en familia
Hasta seis miembros de la familia pueden usar esta app con la opción Compartir en familia activada.