In a class, the scores of 10 students are: 85, 90, 75, 80, 95, 70, 80, 85, 90, 1

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Question: In a class, the scores of 10 students are: 85, 90, 75, 80, 95, 70, 80, 85, 90, 100. What is the mean score?

Options:

Correct Answer: 85

Solution:

Mean = (85 + 90 + 75 + 80 + 95 + 70 + 80 + 85 + 90 + 100) / 10 = 85.

In a class, the scores of 10 students are: 85, 90, 75, 80, 95, 70, 80, 85, 90, 100. What is the mean score?

In a class, the scores of 10 students are: 85, 90, 75, 80, 95, 70, 80, 85, 90, 100. What is the mean score?

Step 1: Write down all the scores of the students: 85, 90, 75, 80, 95, 70, 80, 85, 90, 100.
Step 2: Add all the scores together: 85 + 90 + 75 + 80 + 95 + 70 + 80 + 85 + 90 + 100.
Step 3: Calculate the total sum of the scores: 85 + 90 = 175, 175 + 75 = 250, 250 + 80 = 330, 330 + 95 = 425, 425 + 70 = 495, 495 + 80 = 575, 575 + 85 = 660, 660 + 90 = 750, 750 + 100 = 850.
Step 4: Count the number of students, which is 10.
Step 5: Divide the total sum of the scores (850) by the number of students (10): 850 / 10 = 85.
Step 6: The mean score is 85.

Mean Calculation – The mean is calculated by summing all the scores and dividing by the number of scores.
Basic Arithmetic – Understanding addition and division is essential for calculating the mean.