Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Signals and Systems Introduction To Signals and Systems Classification of Signals
Which of the following assumptions are required to show consistency, unbiasedness and efficiency of the OLS estimator ?
i. E(ui) = 0
ii. Var(ui) = σ2
iii. Cov(ut, ut-j) = 0 ∀ j and
iv. ut ∩ N(0, σ2)
1
ii and iv only
2
i and iii only
3
i, ii and iii only
4
i, ii, iii and iv