Calculates the Geometric Mean from a vector
     
    
    Usage
    geometric.mean(x, logged = FALSE, na.rm = TRUE);
 
     
    
    Arguments
    - x
 
A vector. Values need to be positive if on the log scale.
 
  - logged
 
Indicate whether data is log-transformed or not. Defaults to FALSE. If logged then the function is equivelant to the arithmetic mean.
 
  - na.rm
 
Should NAs be removed.
 
 
    
    Value
    A value corresponding to the geometric mean
     
    
    
    Examples
    x <- abs(rnorm(100));
mean1 <- geometric.mean(x);
mean2 <- mean(x, na.rm = TRUE);
median1 <- median(x, na.rm = TRUE);