For example, Consider we had 20 numbers with specified

**and**

*μ***, and then missed two largest number of them. How do we can estimate the mean (**

*σ***) and standard deviation (**

*μ***) of these 20 numbers with only 18 available numbers, if we know that all of them obey a log-normal distribution?! (this is obvious that these 2 missing numbers are in the tail end of log-normal distribution)**

*σ**Please don't present complex solutions I want to code a program in Matlab to do this for me.