In the formula $\bar{x} = a + \frac{\sum f_{i} d_{i}}{\sum f_{i}}$ for finding the mean of grouped data,$d_{i}$ are deviations from $a$ of:
- Alower limits of the classes
- Bupper limits of the classes
- Cmid points of the classes
- Dfrequencies of the class marks
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Similar Questions
If $Z=12$ and $M=16,$ then $\bar{x}=$ ............
Medium
View SolutionFind the mean,median,and mode of the following frequency distribution:
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ Frequency $5$ $27$ $58$ $20$ $10$
| Class | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ |
|---|---|---|---|---|---|
| Frequency | $5$ | $27$ | $58$ | $20$ | $10$ |
Medium
View SolutionFor some given data,if $M + \bar{x} = 32$ and $M - \bar{x} = 2$,then $Z = \ldots \ldots \ldots$
Easy
View SolutionFind the mean,median and mode of the following frequency distribution:
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ Frequency $5$ $12$ $18$ $40$ $15$ $7$ $3$
| Class | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ |
| Frequency | $5$ | $12$ | $18$ | $40$ | $15$ | $7$ | $3$ |
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
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