The accompanying frequency distribution summarizes data on the number of times smokers who had successfully quit smoking attempted to quit before their final successful attempt (“Demographic Variables, Smoking Variables, and Outcome Across Five Studies,” Health Psychology : 278–287).
Assume that no one had made more than 10 unsuccessful attempts, so that the last entry in the frequency distribution can be regarded as 5–10 attempts. Summarize this data set using a histogram. Be careful—the class intervals are not all the same width, so you will need to use a density scale for the histogram. Also remember that for a discrete variable, the bar for 1 will extend from 0.5 to 1.5. Think about what this will mean for the bars for the 3–4 group and the 5–10 group.
Answer to relevant QuestionsExample 3.19 used annual rainfall data for Albuquerque, New Mexico, to construct a relative frequency distribution and cumulative relative frequency plot. The National Climate Data Center also gave the accompanying annual ...Consumer Reports Health (www.consumer reports.org) gave the accompanying data on saturated fat (in grams), sodium (in mg), and calories for 36 fast-food items. a. Construct a scatterplot using y = calories and x = fat. Does ...Some days of the week are more dangerous than others, according to Traffic Safety Facts produced by the National Highway Traffic Safety Administration. The average number of fatalities per day for each day of the week are ...The article “Most Smokers Wish They Could Quit” (Gallup Poll Analyses, November 21, 2002) noted that smokers and nonsmokers perceive the risks of smoking differently. The accompanying relative frequency table summarizes ...The National Telecommunications and Information Administration published a report titled “Falling Through the Net: Toward Digital Inclusion” (U.S. Department of Commerce, October 2000) that included the following ...
Post your question