In the simple regression model yi = Bo + Bid; + , one usually deals with pairs of observations (;, y;), i = 1, .
In the simple regression model yi = Bo + Bid; + , one usually deals with pairs of observations (;, y;), i = 1, . .., n. Show that (a) Et(ti - I) = 0, and Et(xi -i)(yi - y) = Et(i - x)yi. (b) SX Et(mi - x)(yi - y) = >Gyi, where c = SX SX = ELI(Ii - 1)2
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