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Question 1005  variance, covariance, beta, CAPM, risk, no explanation

Price Data Time Series
Sourced from Yahoo Finance Historical Price Data
Date Adjusted close
S&P500 Index
2017, Fri 29 Dec 2673.61 62.27
2018, Mon 31 Dec 2506.85 66.56
2019, Tue 31 Dec 3230.78 83.67
2020, Tue 31 Dec 3756.07 705.67
Source: Yahoo Finance.


Which of the following statements about the above table which is used to calculate Tesla's equity beta is NOT correct? Over the last 4 years the historical: