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Unformatted text preview: show nonconstancy of error variance? iv. provide a histogram (with Options: Lower bound=14, Upper bound=14 and Interval width=2 in Splus) and a QQ plot of the residuals. Do the residuals look like normal? v. provide an autocorrelation plot of the residuals, to lag 36. (d) For each model, calculate the ﬁtted value and the actual residual for June, 1968. (e) Which model would you prefer? Why? NOTE: The data set ’data1.xls’ can be downloaded from http://www.cuhk.edu.hk/wbt...
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This note was uploaded on 11/02/2011 for the course STAT 4005 taught by Professor Wu,kaho during the Spring '08 term at CUHK.
 Spring '08
 WU,KaHo

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