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The mean of 50 observations is 36, if two observations are 30 and 42 are deleted , then the mean of the remaining observations is
  • a)
    36
  • b)
    48
  • c)
    38
  • d)
    46
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
The mean of 50 observations is 36, if two observations are 30 and 42 a...
Step 1: Calculate the total sum of the observations
The mean of 50 observations is 36. Therefore, the total sum of the 50 observations is: Total Sum = Mean × Number of Observations
Total Sum=Mean×Number of Observations
Total Sum = 36 × 50 = 1800 Total Sum=36×50=1800
Step 2: Subtract the deleted observations
Two observations, 30 and 42, are deleted. The sum of these two observations is: Sum of deleted observations = 30 + 42 = 72
Sum of deleted observations=30+42=72
The new total sum of the remaining observations is:
New Total Sum = 1800 − 72 = 1728 New Total Sum=1800−72=1728
Step 3: Calculate the mean of the remaining observations
The number of remaining observations is:
50 − 2 = 48 50−2=48
The new mean is:
50−2=48
The new mean is:

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The mean of 50 observations is 36, if two observations are 30 and 42 are deleted , then the mean of the remaining observations isa)36b)48c)38d)46Correct answer is option 'A'. Can you explain this answer? for JEE 2025 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about The mean of 50 observations is 36, if two observations are 30 and 42 are deleted , then the mean of the remaining observations isa)36b)48c)38d)46Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The mean of 50 observations is 36, if two observations are 30 and 42 are deleted , then the mean of the remaining observations isa)36b)48c)38d)46Correct answer is option 'A'. Can you explain this answer?.
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