The mean score on Mr. Pascal’s first semester exam for his 28 students is 73 points. If he removes the lowest score of 19 points, what is the adjusted class average ? (arithmetic mean)
sum / 28 = 73
solve for sum
(sum - 19) /27 = ?
To find the adjusted class average, we need to calculate the mean score after removing the lowest score. Here's how you can do it:
1. Start by finding the sum of all the scores: mean score * number of students = 73 * 28 = 2044.
2. Subtract the lowest score from the sum: 2044 - 19 = 2025.
3. Divide the new sum by the number of students minus one (since we removed one score): 2025 / 27 = 75.
Therefore, the adjusted class average (arithmetic mean) after removing the lowest score is 75 points.