Computes an upper limit for a population variance using an estimated variance from a sample of size n in a prior study. The upper limit can be used as a variance planning value in sample size functions that require a variance planning value.
ci.var.upper(alpha, var, n)
alpha value for 1-alpha confidence (one-sided)
estimated variance
sample size
Returns an upper limit (UL) variance planning value
ci.var.upper(.25, 15, 60)
#> UL
#> [1,] 17.23264
# Should return:
# UL
# [1,] 17.23264