R: Point and varioance estimates for expected and log(expected...

lndest {MCPAN} | R Documentation

## Point and varioance estimates for expected and log(expected values) of lognormal samples

### Description

Compute the ML estimates of the expected values and the log of the expected values given several samples of lognormal data, separated by a factor variable. For internal use in `lndci` and `lnrci`.

### Usage

    lndest(x, f)
    lnrest(x, f)

### Arguments

`x` | a numeric vector
`f` | a factor variable (with at least two levels)

### Value

A list with elements

`estimate` | a numeric vector, the point estimates for each factor level
`varest` | a numeric vector, the variance estimates (evaluated at the point estimates) for each factor level
`n` | a numeric vector, the sample size of each factor level

### References

Chen, Y-H, Zhou, X-H (2006). Interval estimates for the ratio and the difference of two log-normal means. Statistics in Medicine 25, 4099-4113.

[Package MCPAN version 1.1-21 Index]