# Question: The pie chart in Figure 2 26 shows the percentage distribution

The pie chart in Figure 2.26 shows the percentage distribution of ages (i.e., the percentages of all prostate cancer patients falling in various age groups) for men who were recently diagnosed with prostate cancer.

a. Are more or fewer than 50% of these patients in their 50s? How can you tell?

b. Are more or fewer than 75% of these patients in their 50s and 60s? How can you tell?

c. A reporter looks at this pie chart and says, “Look at all these 50-year-old men who are getting prostate cancer. This is a major concern for a man once he turns 50.” Explain why the reporter cannot necessarily conclude from this pie chart that there are a lot of 50-year-old men with prostate cancer. Can you think of any other way to present these cancer cases (both graph and variable) to determine if the reporter’s claim is valid?

a. Are more or fewer than 50% of these patients in their 50s? How can you tell?

b. Are more or fewer than 75% of these patients in their 50s and 60s? How can you tell?

c. A reporter looks at this pie chart and says, “Look at all these 50-year-old men who are getting prostate cancer. This is a major concern for a man once he turns 50.” Explain why the reporter cannot necessarily conclude from this pie chart that there are a lot of 50-year-old men with prostate cancer. Can you think of any other way to present these cancer cases (both graph and variable) to determine if the reporter’s claim is valid?

**View Solution:**## Answer to relevant Questions

As shown in Exercise 2.89, back-to-back stem-and-leaf displays can be used to compare the distribution of a variable for two different groups. Consider the following data, which give the alcohol Content by volume (%) for ...Briefly explain the difference between ungrouped and grouped data and give one example of each type. Consider this stem-and-leaf display: Write the data set that was used to construct this display. The following data give the numbers of computer keyboards assembled at the Twentieth Century Electronics Company for a sample of 25 days. Prepare a box-and-whisker plot. Comment on the skewness of these data. The following data give the numbers of driving citations received during the last three years by 12 drivers. a. Find the mean, median, and mode for these data. b. Calculate the range, variance, and standard deviation. c. Are ...Post your question