The mean of $5$ observations is $16$. If an observation $5$ is replaced by $-5$,the new mean is ...........
- A$14$
- B$15$
- C$17$
- D$18$
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Similar Questions
Daily wages of $110$ workers,obtained in a survey,are tabulated below:
Daily wages (in $Rs.$) Number of workers $100-120$ $10$ $120-140$ $15$ $140-160$ $20$ $160-180$ $22$ $180-200$ $18$ $200-220$ $12$ $220-240$ $13$
Compute the mean daily wages of these workers (in $Rs.$).
| Daily wages (in $Rs.$) | Number of workers |
| $100-120$ | $10$ |
| $120-140$ | $15$ |
| $140-160$ | $20$ |
| $160-180$ | $22$ |
| $180-200$ | $18$ |
| $200-220$ | $12$ |
| $220-240$ | $13$ |
Compute the mean daily wages of these workers (in $Rs.$).
Difficult
View SolutionFind the mean,median and mode of the following frequency distribution:
Class $30-40$ $40-50$ $50-60$ $60-70$ $70-80$ $80-90$ $90-100$ Frequency $5$ $7$ $12$ $10$ $8$ $6$ $2$
| Class | $30-40$ | $40-50$ | $50-60$ | $60-70$ | $70-80$ | $80-90$ | $90-100$ |
| Frequency | $5$ | $7$ | $12$ | $10$ | $8$ | $6$ | $2$ |
Medium
View SolutionFind the mean of the distribution:
Class $1-3$ $3-5$ $5-7$ $7-10$ Frequency $9$ $22$ $27$ $17$
| Class | $1-3$ | $3-5$ | $5-7$ | $7-10$ |
| Frequency | $9$ | $22$ | $27$ | $17$ |
Medium
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
View SolutionIf $Z = 36.8$ and $M = 33.6$,then $\bar{x} = \ldots \ldots \ldots \ldots .$
Medium
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