The coefficient of variation for the frequency distribution is
$x_i$ $4$ $3$ $1$ $f_i$ $1$ $3$ $5$
| $x_i$ | $4$ | $3$ | $1$ |
| $f_i$ | $1$ | $3$ | $5$ |
- A$\frac{50}{\sqrt{3}}$
- B$\frac{125}{2 \sqrt{3}}$
- C$\frac{100}{3 \sqrt{2}}$
- D$\frac{100}{\sqrt{3}}$
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Similar Questions
For the frequency distribution:
Variate $(x)$ $x_{1}$ $x_{2}$ $x_{3} \ldots x_{15}$ Frequency $(f)$ $f_{1}$ $f_{2}$ $f_{3} \ldots f_{15}$
where $0 < x_{1} < x_{2} < x_{3} < \ldots < x_{15} = 10$ and $\sum_{i=1}^{15} f_{i} > 0$,the standard deviation cannot be:
| Variate $(x)$ | $x_{1}$ | $x_{2}$ | $x_{3} \ldots x_{15}$ |
| Frequency $(f)$ | $f_{1}$ | $f_{2}$ | $f_{3} \ldots f_{15}$ |
where $0 < x_{1} < x_{2} < x_{3} < \ldots < x_{15} = 10$ and $\sum_{i=1}^{15} f_{i} > 0$,the standard deviation cannot be:
If the variance of the terms in an increasing $A.P.$,$b_{1}, b_{2}, b_{3}, \ldots, b_{11}$ is $90$,then the common difference of this $A.P.$ is
What is the standard deviation of the following series?
Class $0-10$ $10-20$ $20-30$ $30-40$ Frequency $1$ $3$ $4$ $2$
| Class | $0-10$ | $10-20$ | $20-30$ | $30-40$ |
| Frequency | $1$ | $3$ | $4$ | $2$ |
Medium
View SolutionIf the variance of the numbers $-1, 0, 1, k$ is $5$,where $k > 0$,then $k$ is equal to
If $\sum_{i=1}^{n}(x_{i}-a)=n$ and $\sum_{i=1}^{n}(x_{i}-a)^{2}=na$,where $n, a > 1$,then the standard deviation of $n$ observations $x_{1}, x_{2}, \ldots, x_{n}$ is
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