[轉錄][統算] chisq.test
※ [本文轉錄自 NCU96Stat 看板]
作者: Chris7462 (~烤焦麵包~) 看板: NCU96Stat
標題: Re: [統算] chisq.gof()
時間: Wed Jun 4 00:48:56 2008
# chisq.test.r
- rescale.p = FALSE, simulate.p.value = FALSE, B = 2000)
+ rescale.p = FALSE, simulate.p.value = FALSE, B = 2000, unspec.m = 0)
else {
- PARAMETER <- length(x) - 1
+ if(unspec.m){
+ PARAMETER <- length(x) - unspec.m - 1
+ }
+ else {
+ PARAMETER <- length(x) - 1
+ }
PVAL <- pchisq(STATISTIC, PARAMETER, lower.tail = FALSE)
}
## Example 9c ##
> N <- c(6, 2, 1, 9, 7, 5)
> prob <- c(0.0550, 0.1596, 0.2312, 0.2237, 0.1622, 0.1682)
> chisq.test(N, p=prob, unspec.m=1)
Chi-squared test for given probabilities
data: N
X-squared = 19.887, df = 4, p-value = 0.0005257
Warning message:
In chisq.test(N, p = p, unspec.m = 1) :
Chi-squared approximation may be incorrect
--
改一下 chisq.test 的函式,加入一個 unspec.m(unspecified parameter 的個數)
這樣跑出來的結果就跟 Example 9c 一樣了,也就是我們要的 goodness of fit :p
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