Which formula is used to calculate the weighted mean?
- A$W.M. = \frac{\Sigma x_i}{\Sigma w_i}$
- B$W.M. = \frac{\Sigma w_i}{\Sigma x_i}$
- C$W.M. = \frac{\Sigma w_i x_i}{\Sigma x_i}$
- D$W.M. = \frac{\Sigma w_i x_i}{\Sigma w_i}$
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$x_1, x_2, \dots, x_{34}$ are numbers such that $x_i = 150$ for all $i \in \{1, 2, \dots, 10\}$ and $x_{i+1} - x_i = -2$ for all $i \in \{10, 11, \dots, 33\}$. Find the median of $x_1, x_2, \dots, x_{34}$.
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View SolutionThe following data gives the distribution of height of students:
Height (in $cm$) $160$ $150$ $152$ $161$ $156$ $154$ $155$ No of students $12$ $8$ $4$ $4$ $3$ $3$ $7$
The median of the distribution is:
| Height (in $cm$) | $160$ | $150$ | $152$ | $161$ | $156$ | $154$ | $155$ |
| No of students | $12$ | $8$ | $4$ | $4$ | $3$ | $3$ | $7$ |
The median of the distribution is:
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