data set of monthly expenditures (rounded to the nearest dollar) incurred at coffee shops by a sample of 550 households has a minimum value of $17 and a maximum value of $132. Suppose we want to group these data into six classes of equal widths.

Assuming we take the lower limit of the first class as $1 and the upper limit of the sixth class as $132, determine the class limits, boundaries, and midpoints for a grouped quantitative data table.

Hint: To determine the class width, divide upper limit of the sixth class (132) by the number of classes (6).

Class width =

Class LimitsLower BoundaryUpper BoundaryClass Midpoint