The arithmetic mean of 2, 4, 6, 8 is:
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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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Standard deviation is the square root of:
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The median of 1, 3, 5, 7, 9 is:
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If all observations are equal, their variance is:
Question Details
- Subject:
- Mathematics
- Topic:
- Statistics
- Subtopic:
- Mean
- Difficulty:
- medium
- Source:
- FPSC Mathematics Lecturer syllabus-aligned practice; answer verified mathematically; not an official past-paper extraction
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View all in Statistics →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:
View question →
Standard deviation is the square root of:
View question →
The median of 1, 3, 5, 7, 9 is:
View question →
If all observations are equal, their variance is:
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