public:t-701-rem4:s4._hints
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| + | To generate the samples, one can proceed like in Exercise 1.7 (pg. 44 in ISwR). A solution there is | ||
| + | ''apply(sapply(rep(100,10),rnorm),2,mean)''. To understand how it works, start with ''help(sapply)'' and ''sapply(rep(100,10)''. | ||
| + | In the assignment, we need to pass parameters to the ''sample'' function. This is done by named parameters: | ||
| + | '' sapply(1:1000,sample,x=101:111,size=5) ''. One could also use '' replicate '' in a similar manner or use a ''for'' loop instead of the implicit loop. | ||
| + | |||
| + | The means and medians are obtained like in Ex. 1.7. | ||
/var/www/ailab/WWW/wiki/data/pages/public/t-701-rem4/s4._hints.txt ยท Last modified: 2007/09/11 21:54 by helgi
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