Given below is the scatter plot of the price/earnings ratio versus earnings per share of 20 U.S.companies.There appear to be a positive relationship between price/earnings ratio and earnings per share. 
Definitions:
Ivory Soap
A brand of soap marketed by Procter & Gamble that became famous for its claim of purity and floating in water.
Quaker Oats
A brand of oats and oat-based foods known for its iconic Quaker man logo, established in the late 19th century.
Railroad Network
An interconnected system of rail lines designed for the transportation of passengers and freight over long and short distances.
National Market
A domestic marketplace where goods, services, and financial instruments are traded within the boundaries of a specific country.
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