For a given frequency distribution,$n=200$,$\Sigma f_{i} d_{i}=0$ and $A=25$. Then,$\bar{x}=\ldots \ldots \ldots \ldots$
- A$0$
- B$10$
- C$8$
- D$25$
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Similar Questions
For a given frequency distribution,$n=100$ and $\Sigma f_{i} x_{i}=245$. Then,$\bar{x}=\ldots \ldots \ldots \ldots$
Medium
View SolutionFind the mean of the following frequency distribution:
Class
$21-25$
$26-30$
$31-35$
$36-40$
$41-45$
$46-50$
$51-55$
Frequency
$18$
$32$
$30$
$40$
$25$
$15$
$40$
(in $.675$)
| Class | $21-25$ | $26-30$ | $31-35$ | $36-40$ | $41-45$ | $46-50$ | $51-55$ |
| Frequency | $18$ | $32$ | $30$ | $40$ | $25$ | $15$ | $40$ |
Easy
View SolutionThe mean of the following frequency distribution is $43.75$. Find the missing frequency $f$.
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ $70-80$ $80-90$ $90-100$ Frequency $8$ $4$ $20$ $45$ $64$ $32$ $f$ $8$ $2$ $2$
| Class | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ | $70-80$ | $80-90$ | $90-100$ |
| Frequency | $8$ | $4$ | $20$ | $45$ | $64$ | $32$ | $f$ | $8$ | $2$ | $2$ |
Medium
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 SolutionWhile computing the mean of grouped data,we assume that the frequencies are
Easy
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