A stock had returns of 4 percent, 11 percent, 16 percent, -6 percent, and -2 percent for the past five years. Based on these returns, what is the approximate probability that this stock will return at least 20 percent in any one given year?
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Average return = (0.04 + 0.11 + 0.16 - 0.06 - 0.02)/ 5
Average return = 4.6%
Standard deviation = ((1/(5 - 1) * ((0.04 - 0.046)2+ (0.11 - 0.046)2 + (0.16 - 0.046)2 + (-0.06 - 0.046)2 + (-0.02 - 0.046)2)0.5
Standard deviation = ((1/(4) * 0.03272)0.5
Standard deviation = ((1/(4) * 0.03272)0.5 = 9.04%
Upper end of 68 percent range = 0.046 + 0.0904
Upper end of 68 percent range = 13.64%
Probability of earning at least 20 percent in any one year is less than 16 percent but greater than 2.5 percent
Option B
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