A random sample for five exam scores produced the following

A random sample for five exam scores produced the following (hours of study, grade) data values:
Hours Studied (x) Test Grade (y)
3.5 ............... 88
2.4 ............... 76
4 ............... 92
5 ............... 85
1.1 ............... 60
a. Compute the covariance.
b. Compute the correlation coefficient

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