Origin: French suffix -age
Batting average has 3 different meanings across 1 category:
(baseball) a measure of a batter's performance; the number of base hits divided by the number of official times at bat
"Ted Williams once had a batting average above .400"
(an extension of the baseball term) the proportion of times some effort succeeds
"the salesman's batting average was 7 out of 12"
A statistical estimation of the scoring ability of a batsman; equal to the total number of runs scored divided by the number of times out.