Instructions: Work problems on a separate sheet of paper and attach work to this page. You should show all work. Questions with compact answers can be recordeddirectly on this page. Graphs and longer answers that won’t fit here indicate which page of the workthe answer can be found on and be sure to clearly indicate it on the attached pages. You may use Excelto complete the problems but then submit Excel files online.
1. A newspaper article on drunk driving cited data on traffic deaths in Rhode Island: “Forty-twopercent of all fatalities occurred on Friday Saturday and Sunday apparently because ofincreased drinking on the weekends.†What percent of the week do Friday Saturday andSunday represent? Are you surprised that 42% of fatalities occur on those days? How mightdata for the number of cars on the road on those days possibly change or reinforce thatperception?
2. An article in a Midwestern newspaper about flight delays at a major airport said: ‘According to aGannet News Service study of US airline’s performance during the past five months Chicago’sO’Hare Field scheduled 114370 flights. Nearly 10% 1136 were canceled.’ Check the paper’sarithmetic. What percent of scheduled flights were actually cancelled?
3. The number of Americans living below the poverty line increased from 24975000 to 43569000in the 34 years between 1976 and 2009. What percentage increase was this? You should notconclude from this that poverty grew more common in the US during these years. Why not?
4. Do a search for ‘dubious statistics’ on the web. Select one of the articles. Describe the dubioususe of statistics in the cited research. What makes the use of stats dubious in the case youchose?
5. Go to the website http://www.census.gov/ and select a statistic they measure to analyze. It’spreferable to choose something that changes over time. Choose two data points and describethe percentage change between them. Be sure to clearly state that statistics you are using andthe dates associated with them.
6. Create a pie chart for the following data. Copy the data into Excel and create a summary tableto start. A sample of 20 students who had recently taken elementary statistics yielded thefollowing information on the brand of calculator owned (T=Texas Instrument H=HewlettPackard C=Casio S=Sharp). Be sure that your graph is properly labeled displays the percentsand has a title.
Requirements: 1 page and 1 file | .doc file
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