outliers

Outliers

Identify outliers using modified Z-score

Usage

outliers(x, s = 1.4826)

References

Iglewicz, B. & D.C. Hoaglin (1993) How to Detect and Handle Outliers, American Society for Quality Control, Milwaukee, WI.

Aliases

• outliers

Examples

# NOT RUN {
 # Create data with 3 outliers
    x <- seq(0.1, 5, length=100) 
    x[98:100] <- c(100, 55, 250)
 
 # Calculate Z score
     Z <- outliers(x) 
 
 # Show number of extreme outliers using Z-score
     length(Z[Z > 9.9])
 
 # Remove extreme outliers 
     x <- x[-which(Z > 9.9)]

# }