EXAMEN FINAL DE ESTADÍSTICA
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1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
La variable que se va a predecir en la regresión se denomina variable independiente.
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2.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
El análisis de regresión simple se usa cuando la variable independiente contribuye a la variación de una variable dependiente.
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3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
La nube de puntos es una representación gráfica que nos permite visualizar la posible relación entre dos variables.
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4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
El coeficiente de correlación lineal “r” siempre toma valores entre -2 y +2.
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5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Un coeficiente de correlación lineal casi cero indica que la relación lineal entre las variables dependiente e independiente es muy débil.
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6.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Si el coeficiente de correlación lineal vale 1 se dice que hay correlación lineal perfecta positiva.
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7.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
El siguiente valor 1.02, puede ser un coeficiente de correlación.
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