Bidri is a popular and traditional art form in India. Bidri articles (bowls, ves

Question

Bidri is a popular and traditional art form in India. Bidri articles (bowls, vessels, and so on) are made by casting from an alloy containing primarily zinc along with some copper. Consider the following observations on copper content (%) for a sample of Bidri artifacts in a museum, listed in increasing order:

(a) Calculate the mean and median copper content. (Round your answers to three decimal places.)

2.0 2.1 2.5 2.6 2.6 2.7 2.7 2.8 3.0 3.1 3.2 3.4 3.4 3.5 3.5 3.6 3.6 3.6 3.6 3.7 4.3 4.6 4.7 4.8 5.3 10.1

Explanation / Answer

Getting the mean, X,      
      
X = Sum(x) / n      
Sum(x) =    95  

As n = 26,
      
Thus,      
X =    3.653846154 = 3.654 [ANSWER, MEAN]

**************

As n = 26, the median is the average of the two middle terms, 13th and 14th. These are 3.4 and 3.5.

Thus,

median = (3.4 + 3.5)/2 = 3.450 [answer, median]

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