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The following data consists of the scores in a statistics exam. What is the inter-quartile range of this data rounded to the nearest whole number? 80, 99, 77, 67, 93, 71, 76, 86, 79, 71

Respuesta :

Answer:

IQ R = 15  

Step-by-step explanation:

given numbers,

80, 99, 77, 67, 93, 71, 76, 86, 79, 71

arranging numbers in ascending order

67, 71, 71, 76, 77    :   79, 80, 86, 93, 99

    lower half         :        upper half

inter quartile range  = IQR = Q₂ - Q₁

Q₂ = median of the upper half

     =  86

Q₁ = median of the lower half

    = 71

so,

IQ R = Q₂ - Q₁

        = 86 - 71

IQ R = 15  

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