1. Other
  2. Other
  3. in a city with three high schools all the ninth...

Question: in a city with three high schools all the ninth...

Question details

In a city with three high schools, all the ninth graders took a Standardized Test, with these results:

High School Mean score on test Number of ninth graders
Glenwood 82 264
Central City 96 317
Lincoln High 68 188

The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 82 . Of course, that is incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place.

mean of all ninth grader's scores

Solution by an expert tutor
Blurred Solution
This question has been solved
Subscribe to see this solution