STATISTICS The mean score for samantha's first s algebra quizzes was 88. If she scored a 95 on her next quiz, what will her mean score be for all 7 quizzes?
6 * 88 = 528
(528 + 95) / 7 = 89
To find Samantha's mean score for all 7 quizzes, we need to calculate the total sum of scores for all the quizzes.
Mean is calculated by dividing the sum of all the values by the total number of values.
Given that Samantha's mean score for her first 6 quizzes was 88, and she scored a 95 on her next quiz, we can calculate her total score for the first 6 quizzes as follows:
Total score for the first 6 quizzes = (mean score) x (number of quizzes)
Total score for the first 6 quizzes = 88 x 6 = 528
Now, to find her mean score for all 7 quizzes:
Total score for all 7 quizzes = Total score for the first 6 quizzes + Score on the next quiz
Total score for all 7 quizzes = 528 + 95 = 623
Finally, divide the total score by the total number of quizzes:
Mean score for all 7 quizzes = Total score for all quizzes / Total number of quizzes
Mean score for all 7 quizzes = 623 / 7 = 89
Therefore, Samantha's mean score for all 7 quizzes will be 89.