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The mean of 50 numbers is 30. Later it was observed that two entries were wrongly entered as 82 and 13 instead of 28 and 31. Find the correct mean.


A) 36.12

B) 30.66

C) 29.28

D) 38.21

E) None of these

Correct Answer:
C) 29.28

Description for Correct answer:
Sum of 50 members = 50 x 30 = 1500

Required mean = \( \Large \frac{1500 + 28 +31 - 82 -13}{50} \)

= \( \Large \frac{1464}{50} \) = 29.28

Part of solved SBI JuniorAssociate-2 questions and answers : Exams >> Bank Exams >> SBI JuniorAssociate-2




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