log likelihood and derivatives for chi-squared distribution

llikChisq(x, df, full = FALSE)

Arguments

x: variable that is distributed by chi-squared distribution
df: degrees of freedom (non-negative, but can be non-integer).
full: Add the data frame showing x, mean, sd as well as the fx and derivatives

Value

data frame with fx for the log pdf value of with dDf

that has the derivatives with respect to the df parameter the observation time-point

Author

Matthew L. Fidler

Examples


llikChisq(1, df = 1:3, full=TRUE)
#>   x df        fx         dDf
#> 1 1  1 -1.418939  0.63518142
#> 2 1  2 -1.193147 -0.05796576
#> 3 1  3 -1.418939 -0.36481858

llikChisq(1, df = 6:9)
#>          fx        dDf
#> 1 -3.272589 -0.8079658
#> 2 -4.126989 -0.8981519
#> 3 -5.064348 -0.9746324
#> 4 -6.072899 -1.0410091