The numbers 7, 6, 10, 8, and 9 have frequencies 2, 2, 5, 1, and 2. Find their mean.
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If the average of 5 students is given and one student leaves, how is the new average calculated?
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The average of 5, 10, 15, and x is 20. What is the value of x?
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Mean of 5 numbers is 18. Four numbers are 16, 18, 14, and 22. The 5th number is:
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The average of 3 numbers is 26. If the first number is 16 and the second is 31, the third number is:
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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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Standard deviation is the square root of:
Question Details
- Subject:
- Mathematics
- Topic:
- Statistics
- Subtopic:
- Weighted Mean
- Difficulty:
- easy
- Source:
- QUIZZERA
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View all in Statistics →If the average of 5 students is given and one student leaves, how is the new average calculated?
View question →
The average of 5, 10, 15, and x is 20. What is the value of x?
View question →
Mean of 5 numbers is 18. Four numbers are 16, 18, 14, and 22. The 5th number is:
View question →
The average of 3 numbers is 26. If the first number is 16 and the second is 31, the third number is:
View question →
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:
View question →
Standard deviation is the square root of:
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