# JNU ECOM 2010 ques 41-50

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## JNU ECOM 2010 ques 41-50

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## Re: JNU ECOM 2010 ques 41-50

 How to do 49? And for 45 i think the answer is part a. No idea please help with these two n confrm the rest
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## Re: JNU ECOM 2010 ques 41-50

 Let the total no of eggs to be ordered be 100..let us give X to boy 1 and 100-x to boy 2 Let Y be the no of eggs we ultimately get E(Y)= 0.5*x+0*x+ 0.8*(100-x)+0*(100-x) E(y)= 80-0.3x Now we will seek to maximize Y. It will be max if x=0. So we will place the entire order on boy 2
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## Re: JNU ECOM 2010 ques 41-50

 In reply to this post by Arushi :)) Hi Arushi Could you explain me questions 42-25...
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## Re: JNU ECOM 2010 ques 41-50

 This post was updated on . In reply to this post by Arushi :)) Thanks kangkan..:) hi ron for these questions u should be having knowledge of ginni coefficient & measures of central tendency For ques 42 for finding out ginni coefficient we have to take absolute deviation of incomes pairwise , i.e difference of each term with the other , add them up. and then we divide it by 2*mean income*n^2 example for D1 consider red people deviation would be(absolute) 1-2 = 1, 1-3 = 2 1-4 = 3 then for blue people : 2-1=1 ,2-3=1, 2-4=2 then for green, 3-1=2 , 3-2=1, 3-4=1 then for yellow 4-1=3, 4-2=2, 4-3=1 next we have to add all these deviations and divide by 2n^2* mean income mean income is 10/4=2.5 n^2= 16 n sum of deviations is 20 so ginni coeff would be 0.5  the no. of people n incomes are same in country 2 .. thus G1= G2 then option c & d ruled out only comparison between country 4 & 6 is left coming to country 6 the sum of deviations is 20 but there are 5 people of each kind so we will multiply it by 5 = 100. then mean income is 50/20= 2.5 and n^2= 400 so G6 would be 0.1 and lastly for country 4 calculating will give sum of deviations as 28 n^2 = 16 mean income = 2.5 G4= 0.7 G4>G6 Hence option b
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## Re: JNU ECOM 2010 ques 41-50

 This post was updated on . Ques 43 using the formula of standard deviation and taking each country as different distribution.... we get same std deviation for country 1 , 2, 6 =1.1 country 4 ' s standard deviation is 1.6 and country 3's standard deviation is 5.5 so ans would be part a..
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## Re: JNU ECOM 2010 ques 41-50

 For ques 44.. the mean income for country 1, 5 ,6 2 is same 10/4 = 2.5 median is  5/2 for all of them = 2.5 for country 4 mean income is 2.5 and median is 2 so option c & d are ruled out.. for country 3 the median is 25/2 = 12.5 so country 4 has smallest median and country 6 has largest .. rest have the same so option b
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## Re: JNU ECOM 2010 ques 41-50

 45 i am not getting. its not given whether people of a color can use an income of different color or not. if they can use then , all of them are Pareto optimal because giving one's income to other would make one better off & other worse off. But if you give blue income to yellow person and he can't use then he isn't made better off.so i dunno.someone help..
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## Re: JNU ECOM 2010 ques 41-50

 In reply to this post by Arushi :)) Thank you Arushi :))Really appreciatePlease tell me Which book should i refer to for such questions and gini coefficient?
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## Re: JNU ECOM 2010 ques 41-50

 hehe.. u are welcome ronn u can refer to the book on development economics - debraj ray . this is the book we had in third year
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## Re: JNU ECOM 2010 ques 41-50

 Hi Where can i get this question paper
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## Re: JNU ECOM 2010 ques 41-50

 Hi shietal, the question papers are available on this site itself on the Lessons page.
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## Re: JNU ECOM 2010 ques 41-50

 In reply to this post by Arushi :)) Arushi, I think the answer is (b) - all alocations are pareto optimal, because to move away from any of this given distributions you would have to take away some income (say z) of atleast 1 person (let that be an arbitary person i). Irrespective of who you give this z to, and whether or nnot they can use it, i will be made worse off. Therefore every allocation is pareto optimal.