Course Solutions Uncategorized (Answered) : Stock Price S Governed Model S K 1 S K W K Period Length 1 Month Let V Elw K 2 Var W K K S Q28247387

(Answered) : Stock Price S Governed Model S K 1 S K W K Period Length 1 Month Let V Elw K 2 Var W K K S Q28247387

A stock price S is governed by the model In S(k +1) In S(k)w(k) where the period length is 1 month. Let v-Elw(k)] and ?2-var[w(k)] for all k. Now suppose the basic period length is changed to 1 year. Then the model is where each movement in K corresponds to 1 year. What is the natural definition of W(K)? Show that EW(K)]-12v and var[W(K)-12?2. Hence parameters scale in proportion to time.

A stock price S is governed by the model In S(k +1) In S(k)w(k) where the period length is 1 month. Let v-Elw(k)] and ?2-var[w(k)] for

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