Problem
This question: 1 point(s) possible A professor had students keep track of their social interactions for a week. The number of social interactions over the week is shown in the grouped frequency distribution. Identify the lower limit of the sixth class. \begin{tabular}{|c|c|} \hline \begin{tabular}{c} Number of Social \\ Interactions \end{tabular} & Frequency \\ \hline $35-39$ & 14 \\ \hline $40-44$ & 13 \\ \hline $45-49$ & 10 \\ \hline $50-54$ & 15 \\ \hline $55-59$ & 12 \\ \hline $60-64$ & 11 \\ \hline $65-69$ & 4 \\ \hline $70-74$ & 4 \\ \hline $75-79$ & 0 \\ \hline $80-84$ & 2 \\ \hline \end{tabular} The lower limit of the sixth class is $\square$. (Type a whole number.)
Solution
Step 1 ：The problem is asking for the lower limit of the sixth class in the given frequency distribution table.
Step 2 ：Looking at the table, we can see that the sixth class is '60-64'.
Step 3 ：Therefore, the lower limit of the sixth class is 60.
Step 4 ：Final Answer: The lower limit of the sixth class is \(\boxed{60}\)
