A student finds data on an Internet site that contains financial information about selected companies. He plans to analyze the data and use the results to develop a stock investment strategy. What kind of data source is he using? What concerns might you have about drawing conclusions from this data set?
Answer to relevant QuestionsAn automobile manufacturer wants to know what college students think about electric vehicles. They ask you to conduct a survey that asks students, “Do you think there will be more electric or gasoline powered vehicles on ...Here’s a pie chart of the data in Exercise 16. a) Which display of these data is best for comparing the market shares of these brands? Explain. b) Does Mountain Dew or Dr Pepper have a bigger market share? Is that ...The Wells Fargo/Gallup Small Business Index survey from Exercise 23 also asked 604 small businesses about their cash flow over the next 12 months. 13% responded “Very Good,” 37% “Somewhat good,” 21% “Neither good ...The following table displays information for 470 of the S&P 500 stocks, on how their one-day change on October 24, 2011 (a day on which the S&P 500 index gained 1.23%) compared with their year to date change. a) What percent ...From the age distribution data described in Exercise 2: a) Make a bar chart using counts on the y-axis. b) Make a relative frequency bar chart using percentages on the y-axis. c) Make a pie chart.
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