What is the formula for finding the coefficient of variation,given $\sigma = \text{standard deviation}$ and $\bar{x} = \text{mean} \neq 0$?
- A$\frac{\bar{x}}{\sigma} \times 100$
- B$\frac{\bar{x}}{\sigma}$
- C$\frac{\sigma}{\bar{x}}$
- D$\frac{\sigma}{\bar{x}} \times 100$
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Similar Questions
If each of the observations $x_{1}, x_{2}, \ldots, x_{n}$ is increased by $a$,where $a$ is a positive or negative number,show that the variance remains unchanged.
Difficult
View SolutionThe variance of $50$ observations is $7$. Suppose that each observation in this data is multiplied by $6$ and then $5$ is subtracted from it. Then the variance of that new data is
Which of the following data sets has the minimum variance?
For a set of $50$ observations,the sum of their squares is $3050$ and their arithmetic mean is $6$. Find the standard deviation of these observations.
The variance of the following frequency distribution is:
Class Interval $0$-$4$ $4$-$8$ $8$-$12$ $12$-$16$ $16$-$20$ Frequency $2$ $4$ $6$ $3$ $1$
| Class Interval | $0$-$4$ | $4$-$8$ | $8$-$12$ | $12$-$16$ | $16$-$20$ |
| Frequency | $2$ | $4$ | $6$ | $3$ | $1$ |
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