The mean of $10$ observations is $15.7$. If a new observation $19$ is included,the new mean is ..........
- A$17.6$
- B$16$
- C$13.8$
- D$34.7$
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Similar Questions
For the following distribution,the modal class is:
Marks Number of students Below $10$ $3$ Below $20$ $12$ Below $30$ $27$ Below $40$ $57$ Below $50$ $75$ Below $60$ $80$
| Marks | Number of students |
| Below $10$ | $3$ |
| Below $20$ | $12$ |
| Below $30$ | $27$ |
| Below $40$ | $57$ |
| Below $50$ | $75$ |
| Below $60$ | $80$ |
Easy
View SolutionFor some given data,if $M = 62.5$ and $\bar{x} = 64$,then $Z = \ldots$
Easy
View SolutionFind the mode of the following frequency distribution:
Class $0-15$ $15-30$ $30-45$ $45-60$ $60-75$ $75-90$ $90-105$ Frequency $4$ $5$ $23$ $45$ $66$ $42$ $15$
| Class | $0-15$ | $15-30$ | $30-45$ | $45-60$ | $60-75$ | $75-90$ | $90-105$ |
| Frequency | $4$ | $5$ | $23$ | $45$ | $66$ | $42$ | $15$ |
Medium
View SolutionThe mode of the following frequency distribution is $64$ and the total frequency is $200.$ Find the missing frequencies $x$ and $y.$
Class $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ $70-80$ $80-90$ Frequency $8$ $12$ $27$ $x$ $55$ $37$ $y$
| Class | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ | $70-80$ | $80-90$ |
| Frequency | $8$ | $12$ | $27$ | $x$ | $55$ | $37$ | $y$ |
Medium
View SolutionFor the calculation of mode of the following frequency distribution,$f_{0} = \dots \dots \dots \dots \dots$
Class $1-3$ $3-5$ $5-7$ $7-9$ $9-11$ Frequency $6$ $3$ $8$ $2$ $1$
| Class | $1-3$ | $3-5$ | $5-7$ | $7-9$ | $9-11$ |
| Frequency | $6$ | $3$ | $8$ | $2$ | $1$ |
Easy
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