If the modal class of a frequency distribution is $70-85,$ then in the formula for mode,$l=$ ..........
- A$15$
- B$77.5$
- C$70$
- D$85$
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For some given data,if $M + \bar{x} = 32$ and $M - \bar{x} = 2$,then $Z = \ldots \ldots \ldots$
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View SolutionThe mean of the following frequency distribution is $52$. Find the missing frequency $f$.
Class $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ $70-80$ Frequency $5$ $3$ $4$ $f$ $2$ $6$ $13$
| Class | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ | $70-80$ |
| Frequency | $5$ | $3$ | $4$ | $f$ | $2$ | $6$ | $13$ |
Medium
View SolutionFind the median of the following frequency distribution:
Class $65-85$ $85-105$ $105-125$ $125-145$ $145-165$ $165-185$ $185-205$ Frequency $4$ $5$ $13$ $20$ $14$ $8$ $4$
| Class | $65-85$ | $85-105$ | $105-125$ | $125-145$ | $145-165$ | $165-185$ | $185-205$ |
| Frequency | $4$ | $5$ | $13$ | $20$ | $14$ | $8$ | $4$ |
Medium
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