The mean of discrete observations $y_1, y_2, \ldots, y_n$ is given by:
- A$\frac{\sum_{i=1}^n y_i}{n}$
- B$\frac{\sum_{i=1}^n y_i}{\sum_{i=1}^n i}$
- C$\frac{\sum_{i=1}^n y_i f_i}{n}$
- D$\frac{\sum_{i=1}^n y_i f_i}{\sum_{i=1}^n f_i}$
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Similar Questions
Find the median for the following distribution:
Class Frequency $10-20$ $180$ $20-30$ $82$ $30-40$ $34$ $40-50$ $180$ $50-60$ $136$ $60-70$ $23$ $70-80$ $50$
| Class | Frequency |
| $10-20$ | $180$ |
| $20-30$ | $82$ |
| $30-40$ | $34$ |
| $40-50$ | $180$ |
| $50-60$ | $136$ |
| $60-70$ | $23$ |
| $70-80$ | $50$ |
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View SolutionIf the values $1, \frac{1}{2}, \frac{1}{3}, \dots, \frac{1}{n}$ have frequencies $1, 2, 3, \dots, n$ respectively,what is their mean?
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View SolutionIf the mean of $n$ observations $1^2, 2^2, 3^2, \dots, n^2$ is $\frac{46n}{11}$,then what is the value of $n$?
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View SolutionLet $x_1, x_2, \ldots, x_{11}$ be $11$ distinct positive integers. If we replace the largest of these integers by the median of the other $10$ integers,then:
DifficultKVPY 2019
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