Level:
Project ID:
1003029402
Accepted:
1
Clonable:
0
Easy:
0
A sample of \( 50 \) pieces of pears was selected randomly from the production of the plant breeding institute. The weights of these pears are recorded in the table.
\[
\begin{array}{|c|c|} \hline \text{ Weight (g) }&\text{ Number of pears } \\\hline 26\text{ -- }30&8 \\\hline31\text{ -- }35&14 \\\hline 36\text{ -- }40&15 \\\hline 41\text{ -- }45&9 \\\hline 46\text{ -- }50&4\\\hline\end{array}\]
Calculate the variance of pear weights and round the variance to the nearest hundredth.
(To solve the task with help of calculator is recommended.)
\( 33{.}81\,\mathrm{g}^2 \)
\( 5{.}81\,\mathrm{g}^2 \)
\( 15{.}84\,\mathrm{g}^2 \)
\( 39{.}84\,\mathrm{g}^2 \)