Question

What number is missing from the data set if the mean is 43? 50 35 43 44 43 X​

Answer 1

Add up the numbers you know. The problem states a mean of 58 with this set of numbers: 43, 57, 63, 52 and ​x​. Assign the missing number a value of “​x​.” So add 43, 57, 63 and 52 to get 215.

Set up your equation by adding 215 plus “​x​” (the missing number), divided by 5, the number of values given. Set that side of the equation equal to the mean, 58.

Explanation: