$\sum_{i=1}^{10} (x_i - \bar{x}) = \dots$
- A$10 \bar{x}$
- B$10$
- C$9 \bar{x}$
- D$0$
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Similar Questions
The mean of the following data is $26.5$ and the total frequency is $60$. Find the missing frequencies $x$ and $y$.
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ Frequency $6$ $x$ $17$ $y$ $8$
| Class | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ |
| Frequency | $6$ | $x$ | $17$ | $y$ | $8$ |
Medium
View SolutionThe mode of the observations $4, 5, 6, 3, 4, 3, 3, 2, 3, 5$ is $\ldots \ldots \ldots \ldots .$
Easy
View SolutionForm the frequency distribution table from the following cumulative frequency data:
Marks (out of $90$) Number of candidates More than or equal to $80$ $4$ More than or equal to $70$ $6$ More than or equal to $60$ $11$ More than or equal to $50$ $17$ More than or equal to $40$ $23$ More than or equal to $30$ $27$ More than or equal to $20$ $30$ More than or equal to $10$ $32$ More than or equal to $0$ $34$
| Marks (out of $90$) | Number of candidates |
| More than or equal to $80$ | $4$ |
| More than or equal to $70$ | $6$ |
| More than or equal to $60$ | $11$ |
| More than or equal to $50$ | $17$ |
| More than or equal to $40$ | $23$ |
| More than or equal to $30$ | $27$ |
| More than or equal to $20$ | $30$ |
| More than or equal to $10$ | $32$ |
| More than or equal to $0$ | $34$ |
Medium
View SolutionFor a given frequency distribution,$n=100, A=15$ and $\bar{x}=15$. Then,$\Sigma f_{i} d_{i} = \ldots$
Medium
View Solution$\frac{Z-M}{M-\bar{x}}=\ldots \ldots \ldots \ldots$
Easy
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