Twitter opinions of iPhone 6 features. What are the features of Apple’s iPhone 6 that appeal most to customers? To answer this question, researchers collected data on customer opinions and published
the results in Decision Analytics (October 2015). The opinions were extracted from a sample of
0tweets obtained from Twitter. com. The tweets originated in four cities: San Francisco (138 tweets),
New York (182), Los Angeles (89), and Chicago (143). The table below summarizes the opinions on
the iPhone 6 camera (excellent, good, or bad) from tweets in each city.
City Excellent Good Bad
San Francisco 14 94 30
New York 18 113 51
Los Angeles 5 51 33
Chicago 0 94 49
a) Create a pie chart to show the proportion of tweets in the sample that originate in the four citie