Question

Finding the value for a new score that will yield a given mean

Heather has scored 74, 74, and 83 on her previous three tests. What score does she need on her next test so that her average (mean) is 74

Answer 1

Explanation:

The mean in this case is calculated by adding all the scores up divided by the number of scores, in that case, we get the equation:

`(74+74+83+x)/(4) = 74` , where x is the score she needs to get

x = 65

Thus the score she needs to get on her next test is 65.