1 |
x |
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del |
|
alpha |
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pow |
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oneside |
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n |
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VAR |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | ##---- Should be DIRECTLY executable !! ----
##-- ==> Define data, use random,
##-- or do help(data=index) for the standard data sets.
## The function is currently defined as
function (x, del, alpha = 0.05, pow = 0.8, oneside = FALSE, n = NULL,
VAR = NULL)
{
del <- abs(del)
if (is.null(n))
n <- length(x)
if (is.null(VAR))
VAR = var(x)
df <- n - 1
if (!oneside)
alpha <- alpha/2
d <- (del/(qt(pow, df) - qt(alpha, df)))^2
N <- max(c(n, floor(VAR/d) + 1))
N
}
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