After giving grade to a quiz Engr. Cruz announced to the class the mean score was 68 points with the standard deviation of 12 points. However, a student brought to his attention that one of the questions in the quiz was incorrect and impossible to solve. As a result Engr. Cruz agreed to add 10 points to the score of each student. Find the mean, the variance and the standard deviation of the new set of scores.
After giving grade to a quiz Engr. Cruz announced to the class the mean score was 68 points with the standard deviation of 12 points. However, a student brought to his attention that one of the questions in the quiz was incorrect and impossible to solve. As a result Engr. Cruz agreed to add 10 points to the score of each student. Find the mean, the variance and the standard deviation of the new set of scores.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 13PPS
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