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A portfolio manager randomly samples 10 of the 100 sellside earnings estimates for a company. The sample mean was $3.35 and the standard deviation was
A portfolio manager randomly samples 10 of the 100 sellside earnings estimates for a company. The sample mean was $3.35 and the standard deviation was $0.05. Subsequently, the portfolio manager finds a website that calculates the average for all 100 earnings estimates, with the average being $3.45. The difference between the sample mean of $3.35 and the population mean of $3.45 is most likely the result of:
Group of answer choices
A. sample selection bias.
B. data mining.
C. sampling error.
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