Christine's test scores are 89, 94, 88, 75, and 94. What does Christine need to score on the next test to have a median score of 90?
We're looking for a test score so that Christine will have a median score of 90.
The median is the middle value. When we have an even number of values, we take the middle two and take their mean.
The list of values we have so far, in ascending order, is:
The current median value, before adding the new one, is 89 (the current middle value). To get the median value up to 90, we need to add a test score of 91: