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Question
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what is the outlier in the set of data values?
19.2 19.8 25.9 18.1 36.9 23.3 15.7 21.4 61.3 28.6
Step1: Ordenar los datos
$15.7, 18.1, 19.2, 19.8, 21.4, 23.3, 25.9, 28.6, 36.9, 61.3$
Step2: Calcular la mediana
La mediana es $\frac{21.4 + 23.3}{2} = 22.35$
Step3: Calcular Q1 y Q3
Q1 (mediana de la mitad inferior): $\frac{18.1 + 19.2}{2} = 18.65$
Q3 (mediana de la mitad superior): $\frac{25.9 + 28.6}{2} = 27.25$
Step4: Calcular rango intercuartílico
$IQR = Q3 - Q1 = 27.25 - 18.65 = 8.6$
Step5: Definir límites de valores atípicos
Límite inferior: $Q1 - 1.5 \times IQR = 18.65 - 1.5 \times 8.6 = 5.75$
Límite superior: $Q3 + 1.5 \times IQR = 27.25 + 1.5 \times 8.6 = 40.15$
Step6: Identificar el valor atípico
Solo 61.3 supera el límite superior de 40.15.
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61.3