Which assumption of the linear regression model is called ‘no serial correlation’? Select one:
a. et∼N(0,σ2) e t ∼ N ( 0 , σ 2 ) b. E(et)=0 E ( e t ) = 0 c. cov(et,es)=0,t≠s c o v ( e t , e s ) = 0 , t ≠ s d. var(et)=σ2
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