Subject
Mathematics
Topic
Statistics
Subtopic
Average Concept
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First compute total as original average × 5, subtract the leaving student’s marks, then divide by 4.…
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This question focuses on the concept of Average Concept under the broader topic of Statistics.
Related key concepts: Statistics.
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Saba Noor
If all observations are equal, their variance is:
Standard deviation is the square root of:
The average of 5, 10, 15, and x is 20. What is the value of x?
Mean of 5 numbers is 18. Four numbers are 16, 18, 14, and 22. The 5th number is:
The average of 3 numbers is 26. If the first number is 16 and the second is 31, the third number is:
If 8 persons have an average of 12.5 and one person of 18 kg is replaced with 10 kg, the new average will be:
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Source
QUIZZERA
Reviewed
17 May 2026
Updated
17 May 2026