There are 3 classes having 20, 24 and 30 students respectively having average marks in
an examination as 20,25 and 30 respectively. The three classes are represented by A, B and C and you have the following information about the three classes.

• There are 3 classes having 20, 24 and 30 students respectively having average marks in
  
  an examination as 20,25 and 30 respectively. The three classes are represented by A, B and C and you have the following information about the three classes.
  
  a. In class A highest score is 22 and lowest score is 18
  
  b. In class B highest score is 31 and lowest score is 23
  
  c. In class C highest score is 33 and lowest score is 26.
  
  
  If five students are transferred from A to B, what can be said about the average score of A; and what will happen to the average score of C in a transfer of 5 students from B to C ?
  
  a. definite decrease in both cases
  
  b. can't be determined in both cases
  
  c. definite increase in both cases
  
  d. will remain constant in both cases Ans: B
  
  Explanation:
  
  Class A average is 20. And their range is 18 to 22 Class B average is 25. And their range is 23 to 31 Class A average is 30. And their range is 26 to 33
  
  If 5 students transferred from A to B, A's average cannot be determined but B's average comes down as the highest score of A is less than lowest score of B.
  
  If 5 students transferred from B to C, C's average cannot be determined the B's range fo marks and C's range of marks are overlapping.
  
• 7 years agoHelpfull: Yes(3) No(0)
• question incomplete
  DUMMY QUESTION;)
  
• 9 years agoHelpfull: Yes(1) No(1)
• Question is not clear what to do.may be it a dummy question
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• Ya its a dummy question @ TAPAS Tripathi :)
  
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• Data inadequate
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• Question incomplete
  
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• Data inadequate
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• incomplete question
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• data inadequate
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