In the formula $M = l + \frac{(\frac{n}{2} - cf)}{f} \times c$ for the median,$cf = \ldots \ldots \ldots$

  • A
    cumulative frequency of the class preceding the median class
  • B
    lower limit of the median class
  • C
    frequency of the median class
  • D
    class length

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Similar Questions

For 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 $6$ $3$ $8$ $2$ $1$

The mode of the following frequency distribution is $46$ and the total frequency is $150$. Find the missing frequencies $x$ and $y$.
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ $70-80$
Frequency $6$ $8$ $17$ $x$ $42$ $30$ $y$ $8$

For a given frequency distribution,assumed mean $A = 25$,$\Sigma f_{i} d_{i} = 120$ and $\Sigma f_{i} = 140$. Then,the mean $\bar{x} = \dots$

Consider the following frequency distribution:
Class $0-5$ $6-11$ $12-17$ $18-23$ $24-29$
Frequency $13$ $10$ $15$ $8$ $11$

The upper limit of the median class is

Find the mode of the following frequency distribution:
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ $70-80$
Frequency $6$ $8$ $17$ $24$ $42$ $30$ $15$ $8$

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