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Bibliographic Details
Main Author:	Santiago Inzunza Cazares
Format:	Artículo científico
Language:	es
Published:	Sociedad Mexicana de Investigación y Divulgación de la Educación Matemática A. C. 2016
Subjects:	Educación Datos bivariados tecnologías digitales razonamiento covariacional
Online Access:	https://www.redalyc.org/articulo.oa?id=40548562003 https://www.redalyc.org/journal/405/40548562003/ https://www.redalyc.org/journal/405/40548562003/html/ https://www.redalyc.org/journal/405/40548562003/40548562003.epub https://www.redalyc.org/journal/405/40548562003/movil
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Análisis de datos bivariados en un ambiente basado en applets y software dinámico Santiago Inzunza Cazares Educación Datos bivariados tecnologías digitales razonamiento covariacional Se reportan resultados de una investigación sobre análisis de datos bivariados realizada con 34 estudiantes universitarios mientras tomaban un curso introductorio de estadística en el cual se utilizó un ambiente computacional integrado por applets y software dinámico para análisis de datos. En la evaluación diagnóstica los estudiantes exhibieron bajo nivel de razonamiento intuitivo sobre la covariación en diagramas de dispersión, pero en la actividad final, después de haber utilizado el ambiente computacional, lograron identificar con éxito la dirección de la relación entre dos variables y desarrollaron un buen sentido de la intensidad de la relación y el coeficiente de correlación; sin embargo, la interpretación de los coeficientes de la ecuación de regresión y el coeficiente de determinación resultó ser una tarea complicada para ellos. Las estrategias utilizadas en el análisis de datos privilegiaron el uso de representaciones gráficas y visuales sobre representaciones simbólicas de cálculo, como resultado del potencial de visualización dinámica de las herramientas tecnológicas utilizadas. 2016 artículo científico 0187-8298 https://www.redalyc.org/articulo.oa?id=40548562003 https://www.redalyc.org/journal/405/40548562003/ https://www.redalyc.org/journal/405/40548562003/html/ https://www.redalyc.org/journal/405/40548562003/40548562003.epub https://www.redalyc.org/journal/405/40548562003/movil es http://www.redalyc.org/revista.oa?id=405 Educación Matemática application/pdf Sociedad Mexicana de Investigación y Divulgación de la Educación Matemática A. C. Educación Matemática (México) Num.3 Vol.28

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// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

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