Instruction 3-7
Given Below Is the Frequency Distribution of the 12-Month

Short Answer

Instruction 3-7
Given below is the frequency distribution of the 12-month rate of return achieved by 30 stocks.
$$\begin{array} { | c | c | } \hline \text { 12-month Rate of Return } & \text { Number of Funds } \\\hline - 0.10 \text { but less than } 0.0 & 3 \\\hline 0.0 \text { but less than } 0.1 & 5 \\\hline 0.1 \text { but less than } 0.2 & 6 \\\hline 0.2 \text { but less than } 0.3 & 10 \\\hline 0.3 \text { but less than } 0.4 & 6 \\\hline\end{array}$$
-Referring to Instruction 3-7,what is the approximate standard deviation?