If $Z+M=88$ and $Z-M=2$,then $M=\ldots \ldots \ldots \ldots . .$
- A$43$
- B$45$
- C$42$
- D$50$
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Similar Questions
The median class in the following frequency distribution is $\ldots \ldots \ldots \ldots .$
Class $10-25$ $25-40$ $40-55$ $55-70$ $70-85$ $85-100$ Frequency $5$ $21$ $21$ $8$ $25$ $20$
| Class | $10-25$ | $25-40$ | $40-55$ | $55-70$ | $70-85$ | $85-100$ |
| Frequency | $5$ | $21$ | $21$ | $8$ | $25$ | $20$ |
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View SolutionFor a given frequency distribution,$n=100, A=15$ and $\bar{x}=15$. Then,$\Sigma f_{i} d_{i} = \ldots$
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View SolutionFind the mode of the following frequency distribution:
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ $70-80$ Frequency $6$ $8$ $17$ $24$ $42$ $30$ $15$ $8$
| Class | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ | $70-80$ |
|---|---|---|---|---|---|---|---|---|
| Frequency | $6$ | $8$ | $17$ | $24$ | $42$ | $30$ | $15$ | $8$ |
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View SolutionIn the formula $\bar{x} = \frac{\Sigma f_{i} x_{i}}{\Sigma f_{i}}$,$x_{i}$ represents ..........
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View SolutionIn the formula $\bar{x} = \frac{\Sigma f_{i} x_{i}}{\Sigma f_{i}}$,$\Sigma f_{i}$ represents ........
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