Historical Records on a Certain Product Indicate the Following Behavior

Essay

Historical records on a certain product indicate the following behavior for demand. The data represent the days that the business was open during 2019. Convert these data into random number intervals.
$\begin{array}{|c|c|}\hline\begin{array}{c}\text { Demand in } \\\text { cases }\end{array} & \begin{array}{c}\text { Number of } \\\text { occurrences }\end{array} \\\hline 7 & 52 \\\hline 8 & 9 \\\hline 9 & 14 \\\hline 10 & 39 \\\hline 11 & 72 \\\hline 12 & 102 \\\hline\end{array}$