CAT DILR Questions | CAT Line Chart & Bar Chart questions
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Comprehension
Simple Happiness index (SHI) of a country is computed on the basis of three parameters: social support (S), freedom to life choices (F) and corruption perception (C). Each of these three parameters is measured on a scale of 0 to 8 (integers only). A country is then categorized based on the total score obtained by summing the scores of ail the three parameters, as shown in the following table:
Following diagram depicts the frequency distribution of the scores in S, F and C of 10 countries - Amda, Benga, Calla, Delma, Eppa, Varsa, Wanna, Xanda, Yanga and Zooma:
Further, the following are known:
1.Amda and Calla jointly have the lowest total score, 7, with identical scores in all the three parameters.
2.Zooma has a total score of 17.
3.All the 3 countries, which categorised as happy, have the highest score in exactly one parameter.
Explanatory Answer
Method of solving this CAT DILR Question from Line Chart & Bar Chart question
Some simple inferences
1. No one has got any 8 or 0.
2. Score of 3 is the most frequent, scores of 4 and 5 come right after that.
Now, let us look at some of the constraints
Total adding up to 7 – this can be {1, 1, 5}, {1, 2, 4}, (1, 3, 3), {2, 2, 3} in some order.
A and C get identical scores. So, if one gets {1, 1, 5}, the other also should have got {1, 1, 5}.
We do not even have four 1’s, so {1, 1, 5} is ruled out.
We have 1 two from F, and 3 twos from C. So, we cannot have {2, 2, 3} either. Both A and C could have got a 2 with C, but they both could not have gotten a score of 2 with F.
Both {1, 2, 4} and {1, 3, 3} are possible.
Only F = 1 is possible. Only C = 2 is possible. So, more specifically, we have two possibilities
Total adding up to 17 – this can be {7, 6, 4}, {7, 5, 5} or {6, 6, 5} in some order.
Z cannot be {7, 5, 5}.
Why not? Think about this
Only S and F have scores of 7 and 5. There is no C score or 7 or 5. So, Z has to be either {7, 6, 4} or {6, 6, 5}.
Z has to be either {7, 6, 4} or {6, 6, 5}. One Country should have scored highest in S, one in F and one in C. All three totals add up to 14 or more.
Let us call the three as happy Countries as Z, T1, T2 and build possible scenarios.
Let us start with Z = {7, 6, 4}. In this case, Z should have scored the highest in S or F. So some other Country should have scored the highest in C. So, some other Country gets C = 6, Z should get S = 6. So, Z should have got F = 7
Let us start with Z = {7, 6, 4}. In this case, Z should have scored the highest in S or F. So some other Country should have scored the highest in C. So, some other Country gets C = 6, Z should get S = 6. So, Z should have got F = 7. T1 should have S = 7, and T2 should have C = 6
Alternatively Z = {6, 6, 5}. In this case, Z should have scored the highest in C. So the other two Countries should have scored the highest in S and F. Both these tables appear possible.
Incorporating all possibilities
Zooma scored 6 in S in both cases
The question is "What is Zooma's score in S?"
Hence, the answer is "6".
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