The mean deviation from the mean of the set of observations,$-1, 0, 4$ is
- A$3$
- B$1$
- C$-2$
- D$2$
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Similar Questions
Find the mean deviation about the median for the following data:
$x_i$ $3$ $6$ $9$ $12$ $13$ $15$ $21$ $22$ $f_i$ $3$ $4$ $5$ $2$ $4$ $5$ $4$ $3$
| $x_i$ | $3$ | $6$ | $9$ | $12$ | $13$ | $15$ | $21$ | $22$ |
| $f_i$ | $3$ | $4$ | $5$ | $2$ | $4$ | $5$ | $4$ | $3$ |
Medium
View SolutionFind the mean deviation about the mean for the following data:
Marks obtained $0-20$ $20-40$ $40-60$ $60-80$ $80-100$ Number of students $10$ $8$ $12$ $9$ $11$
| Marks obtained | $0-20$ | $20-40$ | $40-60$ | $60-80$ | $80-100$ |
| Number of students | $10$ | $8$ | $12$ | $9$ | $11$ |
The mean deviation about the mean for the following data: $5, 6, 7, 8, 6, 9, 13, 12, 15$ is
The following data represents the frequency distribution of $20$ observations. $x_i$ $3$ $4$ $5$ $8$ $10$ $11$ $f_i$ $\alpha+2$ $(\alpha-1)^2$ $4$ $\alpha-1$ $2$ $\alpha$
Then its mean deviation about the mean is
| $x_i$ | $3$ | $4$ | $5$ | $8$ | $10$ | $11$ |
|---|---|---|---|---|---|---|
| $f_i$ | $\alpha+2$ | $(\alpha-1)^2$ | $4$ | $\alpha-1$ | $2$ | $\alpha$ |
Find the mean deviation about the mean for the following data.
Marks obtained $10-20$ $20-30$ $30-40$ $40-50$ $50-60$ $60-70$ $70-80$ No of students $2$ $3$ $8$ $14$ $8$ $3$ $2$
| Marks obtained | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ | $70-80$ |
| No of students | $2$ | $3$ | $8$ | $14$ | $8$ | $3$ | $2$ |
Medium
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