The following table shows the annual returns (in percent)Chevron and Caterpillar for 2007-2010. 
a.Which fund had the higher arithmetic average return?
B)Which fund was riskier over this time period?
C)Given a risk-free rate of 1%,which fund has the higher Sharpe ratio? What does this imply?
Definitions:
Prefrontal Cortex
A region of the frontal lobe of the brain associated with decision making, social behavior, personality, and cognitive planning.
Catecholamine Neurotransmitters
A class of neurotransmitters, including dopamine and norepinephrine, that are involved in the body's fight or flight response.
Dietary Factors
Elements of a diet that influence health, including nutrients, food types, and eating habits.
Epidemiological Studies
Investigations looking at how diseases are distributed among populations and the factors influencing their spread.
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