The variance of the data $1, 2, 3, 5, 8, 13, 17$ is approximately
- A$31.14$
- B$29.57$
- C$30.62$
- D$32.71$
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Similar Questions
The mean and $S.D.$ of $1, 2, 3, 4, 5, 6$ are
Medium
View SolutionThe frequency distribution:
$\begin{array}{|l|l|l|l|l|l|l|} \hline X & A & 2 A & 3 A & 4 A & 5 A & 6 A \\ \hline f & 2 & 1 & 1 & 1 & 1 & 1 \\ \hline \end{array}$
where $A$ is a positive integer,has a variance of $160$. Determine the value of $A$.
$\begin{array}{|l|l|l|l|l|l|l|} \hline X & A & 2 A & 3 A & 4 A & 5 A & 6 A \\ \hline f & 2 & 1 & 1 & 1 & 1 & 1 \\ \hline \end{array}$
where $A$ is a positive integer,has a variance of $160$. Determine the value of $A$.
Medium
View SolutionIf the standard deviation of $x_i$ is $10$,what will be the variance of $(50 + 5x_i)$?
Easy
View SolutionWhat 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 SolutionConsider the following frequency distribution: $C$.$I$. $75$-$175$ $175$-$275$ $275$-$375$ $375$-$475$ $475$-$575$ $575$-$675$ $675$-$775$ $f_i$ $3$ $2$ $1$ $0$ $1$ $2$ $3$
If the variance of this distribution is $60000$,then the coefficient of variation of the distribution is:
| $C$.$I$. | $75$-$175$ | $175$-$275$ | $275$-$375$ | $375$-$475$ | $475$-$575$ | $575$-$675$ | $675$-$775$ |
| $f_i$ | $3$ | $2$ | $1$ | $0$ | $1$ | $2$ | $3$ |
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