In a city with three high schools, all the ninth graders took a Standardized Test, with these results: High School Mean score on

Question

4 years ago

8

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 76 272 Central City 95 322 Lincoln High 73 161 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was 81.3 . Of course, that is incorrect. What is the mean score for all ninth graders in the city

Mathematics

1 answer:

uysha [10] · Answer 1 · 2021-11-26T21:31:37+03:00

uysha [10]4 years ago

8 0

Answer:

81585

Step-by-step explanation:

the addition of the all the results divided by the total number of high schools.

76272+95322+73161 ÷ 3

244755÷3

81585