Question 3 (30 points) Q3. (30 points) A sample of college students reported they owned the following number of books. $\mathrm{X}=$ number of books of college students \begin{tabular}{|1|1|1|} \hline$X$ & $X$ - $-\bar{X}$ & $\underline{\overline{X-\bar{X})^{2}}}$ \hline 52 && \hline 76 && \hline 64 & & W \hline 79 & & \hline 80 & & W \hline 74 && \hline 66 & & \hline 69 & & \hline \end{tabular) a. What is the meanl number of books owned? b. What is the mean absolute deviation of the number of books owned? c. What is the standard deviation of the number of books owned? SS.SP.289