On the Existence and Uniqueness of the Maximum Likelihood Estimators of Normal and Lognormal Population Parameters with Grouped Data

Table 3

Grouped data: 𝜏₁=0, 𝜏₂=1.5, 𝜏₃=3, 𝜏₄=4.5, 𝜏₅=6.

S.S	𝑚			𝜈
𝑛	Average	A.W.	C.R.	Average	A.W.	C.R.
30	21.657	31.826	92.7%	203.855	845.742	82.2%
35	21.397	29.168	93.4%	189.163	679.646	83.8%
40	21.201	26.989	93.1%	181.097	558.176	84.6%
50	20.974	23.931	93.6%	172.924	429.353	85.1%
100	20.495	16.577	94.3%	159.906	274.166	89.2%