ni _ n [f(a - + f(d)]

As tabulated, this is a singly right censored sample with N = 2608, n = 2565, c = 43, and d = 8. The mean of the censored observations is x = 3. 77 50. The applicable estimating equation is (13.2.22), which we solve with X. 1 = x = 3.8 (rounded off) as a first approximation. We find that~ lies between 3.8 and 3.9, and linear interpolation as shown below yields ~ = 3.870.