Consider the following frequency table representing the distribution of hours students study for an exam in a week.
\begin{tabular}{|c|c|}
\hline \multicolumn{2}{|c|}{\begin{tabular}{c}
Hours \\
Students study for \\
an exam in a week
\end{tabular}} \\
\hline Class & Frequency \\
\hline $18-28$ & 11 \\
\hline $29-39$ & 5 \\
\hline $40-50$ & 8 \\
\hline $51-61$ & 2 \\
\hline $62-72$ & 15 \\
\hline
\end{tabular}
Copy Data
Determine the class width of each class.
Answer
Final Answer: The class width of each class is \(\boxed{10}\).
Step 1 ：Consider the following frequency table representing the distribution of hours students study for an exam in a week. The classes are 18-28, 29-39, 40-50, 51-61, and 62-72.
Step 2 ：The class width can be determined by subtracting the lower limit of a class from the upper limit.
Step 3 ：For each class, subtract the lower limit from the upper limit to find the class width.
Step 4 ：The class widths are calculated as follows: \(28 - 18 = 10\), \(39 - 29 = 10\), \(50 - 40 = 10\), \(61 - 51 = 10\), \(72 - 62 = 10\).
Step 5 ：Final Answer: The class width of each class is \(\boxed{10}\).
