how do you compute an E.R.A.?

Answer 1

To compute an E.R.A. you multiply the number of earned runs a pitcher has by 9 and then divide that number by the number of innings pitched. 25 Earned Runs in 62 innings pitched would be (25x9)/62=3.63 ERA. This number shows the amount of runs allowed per 9 innings pitched.

Answer 2

(ER/IP) * 9 = ERA

Where ER is earned runs allowed by the pitcher, and IP is his innings pitched. Remember that 1 out is 1/3 of and inning, so pitching 6 full innings and getting 1 out in the 7th before being retired is 6.3333333333 innings.

ERA is a computation to show how many ER a given pitcher would give up if he pitched a full, 9 inning game. The first part shows his average ER per inning he pitched, then you multiply it by 9 to get that average over a 9 inning period.

* The guy above me is totally wrong.

Answer 3

It is the average of earned runs given up over 9 innings.

For instance, if a pitcher gives up 2 earned runs over 6 innings. His era is 3.00.

Answer 4

Take the number of earned runs and multiply 9. Take that total, and then divide that number by the number of innings pitched.

Answer 5

just average together the runs that scored and were allowed w/out an error and average them. (ERA= Earned Run Average)

Example: Let's say when Curt Shilling is pitching, 3 runs score, but one was b/c of an error throw to home plate. His ERA for this game is 2.If the next game he allows 5 runs, them you add together 2 and 5 to get 7, then divide by the number of games which would be 2 and get a 3.5 ERA

Answer 6

You divide the number of innings pitched by 9 and then divide the number of earned runs by the first number
IP
-----------= 1st number
9

Then ER
--------------------------= ERA
1st number

Example:
7/9=0.7777777...
3=ER
3/0.777777=3.85714=rounded off to 3.86

Answer 7

(ER/IP) * 9 = ERA