G Thumb, the Leading Salesperson for the Moe D }">$\text { cellpadding="0" cellspacing="0" width=" } 63 \% \text { " border="0"> }$

G. Thumb, the leading salesperson for the Moe D. Lawn Landscaping Company, turned in the following summary of clients contacted for the week of October 23-28:
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$$\begin{array} { l l } \text { Date } & \begin{array} { l } \text { Number of Clients } \\\text { Contacted }\end{array} \\\text { Oct. } 23 & 10 \\\text { Oct. } 24 & 8 \\\text { Oct. } 25 & 9 \\\text { Oct. } 26 & 15 \\\text { Oct. } 27 & 9 \\\text { Oct. } 28 & 21\end{array}$$ Find the variance and the standard deviation, rounded to the nearest hundredth. variance: __________ standard deviation: __________