hwd 1.1 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 84 270 Central City 92 349 Lincoln High 68 154 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? Mean of all ninth grader's scores = Round to 2 places
hwd 1.1 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 84 270 Central City 92 349 Lincoln High 68 154 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? Mean of all ninth grader's scores = Round to 2 places
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 42PFA
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hwd 1.1
In a city with three high schools, all the ninth graders took a Standardized Test, with these results:
High School | Number of ninth graders | |
---|---|---|
Glenwood | 84 | 270 |
Central City | 92 | 349 |
Lincoln High | 68 | 154 |
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?
Mean of all ninth grader's scores = Round to 2 places
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