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The following data for five years of the annual returns for two of Vanguards mutual funds, the Vanguard Energy Fund ( x ) and the

The following data for five years of the annual returns for two of Vanguard’s mutual funds, the Vanguard Energy Fund (x) and the Vanguard Healthcare Fund (y), were given as s_x= 35.77, s_y= 13.34, s_xy= 447.68. Which of the following is the value of the sample correlation coefficient?

Multiple Choice

0.88
0.94
0.78
-0.78

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