how does a walk affect your batting average
Base on balls Receiving a base on balls does not count as a hit or an at bat for a batter but does count as a time on basebut doesn't count as a plate appearance. Therefore, a base on balls does not affect a player's batting average, but it can increase his on-base percentage.[8]
Batting average For non-pitchers, a batting average below .230 is often considered poor, and one below .200 is usually unacceptable. This latter level is sometimes referred to as "The Mendoza Line", named for Mario Mendoza (a lifetime .215 hitter), a stellar defensive shortstop whose defensive capabilities just barely made up for his offensive shortcomings. The league batting average in Major League Baseball for 2016 was .255,[9] and the all-time league average is between .260 and .275.
At bat In baseball, an at bat (AB) or time at bat is a batter's turn batting against a pitcher. An at bat is different from a plate appearance. A batter is credited with a plate appearance regardless of what happens during his turn at bat. A batter is credited with an at bat only if that plate appearance does not have one of the results enumerated below. While at bats are used to calculate certain statistics, including batting average and slugging percentage, a player can qualify for the season-ending rankings in these categories only if he accumulates 502 plate appearances during the season.
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.