If $3 \bar{x} = 2 M = 60,$ then $Z = \dots$

  • A
    $0$
  • B
    $40$
  • C
    $50$
  • D
    $60$

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Similar Questions

For a given frequency distribution,$\bar{x} = 19.7$,$A = 20$,and $n = 50$. Then,$\Sigma f_{i} d_{i} = \ldots$

If $Z+M=34$ and $M+\bar{x}=40,$ then $M=\ldots \ldots \ldots . . .$

Calculate the mean of the following frequency distribution:
Class $80-90$ $90-100$ $100-110$ $110-120$ $120-130$ $130-140$ $140-150$ $150-160$ $160-170$
Frequency $6$ $18$ $78$ $80$ $100$ $72$ $0$ $40$ $6$
(in $.55$)

If $Z - M = 4$,then $M - \bar{x} = \dots$

The excluding type of class $30-45$ does not include .........

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