In the formula $Z = l + \left( \frac{f_{1} - f_{0}}{2f_{1} - f_{0} - f_{2}} \right) \times c$,$f_{1}$ represents:
- Alower limit of the modal class
- Bfrequency of the modal class
- Cfrequency of the class preceding the modal class
- Dfrequency of the class succeeding the modal class
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Similar Questions
Rachana had an average score of $45$ from $6$ tests. Her teacher dropped her lowest score,which is $30$,and calculated the average of the remaining scores to decide her grade. Which of the following gives her new average score?
Medium
View SolutionThe formula to find the mean of a grouped data by the direct method is .........
Easy
View SolutionThe median of the following frequency distribution is $525$ and the total frequency is $100$. Find the missing frequencies $x$ and $y$.
Class $0-100$ $100-200$ $200-300$ $300-400$ $400-500$ $500-600$ $600-700$ $700-800$ $800-900$ $900-1000$ Frequency $2$ $5$ $x$ $12$ $17$ $20$ $y$ $9$ $7$ $4$
| Class | $0-100$ | $100-200$ | $200-300$ | $300-400$ | $400-500$ | $500-600$ | $600-700$ | $700-800$ | $800-900$ | $900-1000$ |
| Frequency | $2$ | $5$ | $x$ | $12$ | $17$ | $20$ | $y$ | $9$ | $7$ | $4$ |
Difficult
View SolutionFor a given frequency distribution,$A=49.5, \Sigma f_{i}=40, \Sigma f_{i} u_{i}=-5$ and $c=20$. Then,mean $\bar{x}=$ ............
Easy
View SolutionFor the following data,the modal class is .... .
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ Frequency $7$ $16$ $25$ $32$ $20$
| Class | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ |
| Frequency | $7$ | $16$ | $25$ | $32$ | $20$ |
Easy
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