Consider the monthly simple returns of CRSP Decile 1, 2, 5, 9, and 10 portfolios based on the…

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If not specically specied, use 5% signicance level to draw conclusions in the exercises.1. Consider the monthly simple returns of CRSP Decile 1, 2, 5, 9, and 10 portfolios based on the market capitalization of NYSE/AMEX/NASDAQ. The data span is from January 1961 to September 2011.

(a) For the return series of Decile 2 and Decile 10, test the null hypothesis that the rst 12 lags of autocorrelations are 0 at the 5% level. Draw your conclusion.

(b) Build an ARMA model for the return series of Decile 2. Perform model checking and write down the tted model.

(c) Use the tted ARMA model to produce 1- to 12-step ahead forecasts of the series and the associated standard errors of forecasts.

I need R code for those questions..please help me someone!

 
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