(August 2016) The 5th Wave is a young adult science fiction novel by American author Rick Yancey, published in 2013, and is the first installment in The 5th Wave trilogy. Critics have compared the book favorably to The Hunger Games and The Road, and noted that it should do for aliens what Twilight did for vampires..
Formula. The batting average is calculated in the following way: Batting Average = Total number of hits / Total number of at bats. For example, if a player has 200 at-bats, and has 70 hits, then his Batting Average is 70 / 200 = 0.350.
ERA in baseballs stands for âearned run average.â It is used to measure a pitcherâs performance and was originally created during the 1900s to rate the effectiveness of relief pitchers.Today, it is one of most widely recognized statistics used to assess a pitcherâs ability.alculations. An ERA is calculated by adding up the earned runs and dividing the number by the number of innings pitched. That number is then multiplied by 9. For example, if a pitcher allowed 25 earned runs over 100 innings, you would divide 25 by 100 and then multiply by 9. The ERA would be 2.25.