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:
Cortisol
A steroid hormone produced by the adrenal gland, often released in response to stress and a component of the body's fight or flight response.
REM Sleep
A stage of sleep characterized by rapid eye movements, more dreaming, and bodily movement.
Vivid Dream
A very clear, detailed, and realistic dream that is often easily remembered upon waking.
Daylight Savings Time
The practice of setting the clock forward by one hour during warmer months to extend evening daylight and reduce morning daylight.
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