Answer 20 points and brainiest ! on the board, your teacher writes an example of how to find the median. one of the numbers is erased, leaving what is shown, 18, 30, 26,12 22. what is the median? a. 10 b. 20 c. 24 d. 28

 (B) 20  or  (C) 24 depending on which number was erased

Step-by-step explanation:

The median is the middle number of the set in order from least to greatest

{18, 30, 26, 12, 22}

First, put the set in order from least to greatest: {12, 18, 22, 26, 30}

Next, find the middle number by crossing out the end numbers:

The median of the given set is 22.  Since a number was erased, then the median has to be the average of the two middle numbers.  

If the erased number is on the left side {?, 12, 18, 22, 26, 30}, then the median is the average of 18 and 22, which is 20

If the erased number is on the right side {12, 18, 22, 26, 30, ?}, then the median is the average of 22 and 26, which is 24