Question

PRINTER VERSION BACK NEXT 8th-ed Chap 02, Sec 2.2, Problem 017 A data set on monthly expenditures (rounded to the nearest dollar) incurred on fast food by a sample of 500 households has a minimum value of $2 and a maximum value of $176. Suppose we want to group these data into six classes of equal widths. a. Assuming we take the lower limit of the first class as $1 and the upper limit of the sixth class as $180, write the class limits for all six classes. b. Determine the class boundaries and class widths c. Find the class midpoints. (For the first class set the upper limit of the previous class to be 0.) Class limits Lower boundary Upper boundary Midpoint to 0.5 to 90.5 61 to 90 91 to 120 121 to 150 60.5 90.5 120.5 150.5 120.5 150.5 180.5 151 to 180 Class width

Answer 1

Clas imits lowo boundary uhzn bdad 1 4 30 30. 21t60 6 1 t 120 _121-to-150-120,S 120- 65-5- awx ala 3 0