Develop a frequency table and a relative frequency table to summarize this

Develop a frequency table and a relative frequency

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Milwaukee. Develop a frequency table and a relative frequency table to summarize thisinformation.5.Wellstone, Inc., produces and markets replacement covers for cell phones in a variety ofcolors. The company would like to allocate its production plans to five different colors:bright white, metallic black, magnetic lime, tangerine orange, and fusion red. The com-pany set up a kiosk in the Mall of America for several hours and asked randomly selectedpeople which cover color was their favorite. The results follow:Constructing Frequency Distributions: Quantitative DataIn Chapter 1 and earlier in this chapter, we distinguished between qualitative andquantitative data. In the previous section using the Whitner Autoplex data, we sum-marized the qualitative variable, vehicle type, using a frequency table, a relative fre-quency table, a bar chart, and a pie chart.The Whitner Autoplex data also includes two quantitative variables: selling priceand age of the buyer. Suppose Ms. Ball wants to summarize last month’s sales usingselling price. We can describe selling price using a frequency distribution.How do we develop a frequency distribution? The first step is to tally the data intoFREQUENCY DISTRIBUTIONA grouping of data into mutually exclusive classes showing the number of observations in each class.
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28 Chapter 2 Example Solution Step 1: Decide on the number of classes.The goal is to use just enoughgroupings or classesto reveal the shape of the distribution. Some judg-ment is needed here. Too many classes or too few classes might notreveal the basic shape of the data set. In the vehicle selling price exam-ple, three classes would not give much insight into the pattern of thedata (see Table 2–5).We return to the situation where Ms. Kathryn Ball of AutoUSA wants tables, charts,and graphs to show the typical selling price on various dealer lots. Table 2–4 reportsonly the price of the 80 vehicles sold last month at Whitner Autoplex. What is thetypicalselling price? What is the highestselling price? What is the lowestsellingprice? Around what value do the selling prices tend to cluster? TABLE 2–4 Prices of Vehicles Sold Last Month at Whitner Autoplex Highest Lowest $23,197 $23,372 $20,454 $23,591 $26,651 $27,453 $17,266 18,021 28,683 30,872 19,587 23,169 35,851 19,251 20,047 24,285 24,324 24,609 28,670 15,546 15,935 19,873 25,251 25,277 28,034 24,533 27,443 19,889 20,004 17,357 20,155 19,688 23,657 26,613 20,895 20,203 23,765 25,783 26,661 32,277 20,642 21,981 24,052 25,799 15,794 18,263 35,925 17,399 17,968 20,356 21,442 21,722 19,331 22,817 19,766 20,633 20,962 22,845 26,285 27,896 29,076 32,492 18,890 21,740 22,374 24,571 25,449 28,337 20,642 23,613 24,220 30,655 22,442 17,891 20,818 26,237
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