BackgroundWhile dealing with skewed outcome, researchers often use log-transformation to convert the data into normal and apply commonly used statistical tests like t-test, linear regression, etc. However, log-transformed will not be at all times. In such situations, Box-Cox transformation (BCT) can transform normal. problem arises when researcher wanted predict outcome in original scale. There...

1. We describe an open source R package agTrend for analyzing regional trends of abundance from sites with uneven sample schedules. 2. The package agTrend uses an abundance summary approach to estimate trends. By considering abundance trends in this fashion, rather than a model parameter, we can easily augment missing observations to calculate aggregated abundance and trends. 3. The package use...