In the formula $M = l + \frac{(\frac{n}{2} - cf)}{f} \times c$ for the median,$cf = \ldots \ldots \ldots$
- Acumulative frequency of the class preceding the median class
- Blower limit of the median class
- Cfrequency of the median class
- Dclass length
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Similar Questions
The following are the ages of $300$ patients getting medical treatment in a hospital on a particular day:
Age (in years) $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ Number of patients $60$ $42$ $55$ $70$ $53$ $20$
Form:
$(i)$ Less than type cumulative frequency distribution.
$(ii)$ More than type cumulative frequency distribution.
| Age (in years) | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ |
| Number of patients | $60$ | $42$ | $55$ | $70$ | $53$ | $20$ |
Form:
$(i)$ Less than type cumulative frequency distribution.
$(ii)$ More than type cumulative frequency distribution.
Medium
View SolutionFor the calculations of mode of a grouped data,the maximum frequency of a class is denoted by $\ldots \ldots \ldots . .$
Easy
View SolutionFor a given frequency distribution,the cumulative frequency of the fourth class is $25$ and the frequency of the fourth class is $10$. Then,the cumulative frequency of the third class is ...............
Easy
View SolutionIn the following distribution:
Monthly income range (in $Rs.$) Number of families Income more than $10000$ $100$ Income more than $13000$ $85$ Income more than $16000$ $69$ Income more than $19000$ $50$ Income more than $22000$ $33$ Income more than $25000$ $15$
The number of families having an income range (in $Rs.$) of $16000-19000$ is:
| Monthly income range (in $Rs.$) | Number of families |
| Income more than $10000$ | $100$ |
| Income more than $13000$ | $85$ |
| Income more than $16000$ | $69$ |
| Income more than $19000$ | $50$ |
| Income more than $22000$ | $33$ |
| Income more than $25000$ | $15$ |
The number of families having an income range (in $Rs.$) of $16000-19000$ is:
Easy
View SolutionFind the unknown entries $a, b, c, d, e, f$ in the following distribution of heights of students in a class:
Height (in $cm$) Frequency Cumulative frequency $150-155$ $12$ $a$ $155-160$ $b$ $25$ $160-165$ $10$ $c$ $165-170$ $d$ $43$ $170-175$ $e$ $48$ $175-180$ $2$ $f$ Total $50$ -
| Height (in $cm$) | Frequency | Cumulative frequency |
| $150-155$ | $12$ | $a$ |
| $155-160$ | $b$ | $25$ |
| $160-165$ | $10$ | $c$ |
| $165-170$ | $d$ | $43$ |
| $170-175$ | $e$ | $48$ |
| $175-180$ | $2$ | $f$ |
| Total | $50$ | - |
Medium
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