What is the mean deviation of a frequency distribution equal to?
- A$\frac{\Sigma d_i}{\Sigma f_i}$
- B$\frac{\Sigma |d_i|}{\Sigma f_i}$
- C$\frac{\Sigma f_i d_i}{\Sigma f_i}$
- D$\frac{\Sigma f_i |d_i|}{\Sigma f_i}$
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Similar Questions
Calculate the mean deviation about the median for the following data:
Class $0-10$ $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ Freq $6$ $7$ $15$ $16$ $4$ $2$
| Class | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ |
| Freq | $6$ | $7$ | $15$ | $16$ | $4$ | $2$ |
Difficult
View SolutionThe mean deviation about the mean for the observations $ -1, 0, 4 $ is:
Easy
View SolutionCalculate the mean deviation about the mean of the set of first $n$ natural numbers when $n$ is an even number.
Medium
View SolutionThe mean deviation of the numbers $a, a+d, a+2d, \ldots, a+2nd$ from their mean is equal to
The mean deviation from the median for the following data is:
$x$ $10$ $11$ $12$ $13$ $f$ $6$ $12$ $18$ $12$
| $x$ | $10$ | $11$ | $12$ | $13$ |
|---|---|---|---|---|
| $f$ | $6$ | $12$ | $18$ | $12$ |
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