2010 · Q73
What is the weighted mean of first 10 natural numbers whose weights are equal to the corresponding number ?
Elementary MathematicsStatistics
- A7
- B7.5
- C8
- D8.5
Explanation
Σn³/Σn=385/55=7.
What is the weighted mean of first 10 natural numbers whose weights are equal to the corresponding number ?
Explanation
Σn³/Σn=385/55=7.