Ronnie Hinson has penned the lyrics to some of Southern Gospel music's greatest songs. The Lighthouse is one such song that has indeed stood the test of times. It bears testimony to the power of God's Holy Spirit and His Word to lead wayward souls to the safe harbor of Christ's Grace.
The average absolute deviation (or mean absolute deviation) of a data set is the average of the absolute deviations from a central point. It is a summary statistic of statistical dispersion or variability.
2. (Statistics) Also: mean deviation from the mean, mean deviation from the median or average deviation a measure of dispersion derived by computing the mean of the absolute values of the differences between observed values of a variable and the variable's mean. n. Also called average deviation.