Question

A consumer group surveyed food prices at 87 stores on the East Coast. Among the food prices being measured was that of sugar. From the data collected, the group constructed the frequency distribution of the prices of 4 pounds of Domino’s sugar in the stores surveyed. Compute a histogram, a frequency polygon, and an ogive for the following data. Price Frequency $1.75–under $1.90 9 1.90–under $2.05 14 2.05–under 2.20 17 2.20–under 2.35 16 2.35–under 2.50 18 2.50–under 2.65 8 2.65–under 2.80 5

Answer 1

Ans:

Class	midpoint	frequency	cumulative frequency
1.75-1.9	1.83	9	9
1.9-2.05	1.98	14	23
2.05-2.20	2.13	17	40
2.20-2.35	2.28	16	56
2.35-2.50	2.43	18	74
2.50-2.65	2.58	8	82
2.65-2.80	2.73	5	87

Frequency polygon: