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Cal combined mean Section A, B, C mean marks 75,60,55 NO OF STUDENTS 50,60,70?
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Cal combined mean Section A, B, C mean marks 75,60,55 NO OF STUDENTS 5...
Combining Mean Marks for Sections A, B, and C

In order to combine the mean marks for Sections A, B, and C, we need to consider the number of students in each section and their respective mean marks. Let's analyze the given information step by step:

Section A:
- Number of students: 50
- Mean marks: 75

Section B:
- Number of students: 60
- Mean marks: 60

Section C:
- Number of students: 70
- Mean marks: 55

To combine the mean marks for these sections, we need to take into account the number of students in each section. The mean is calculated by summing up all the individual marks and dividing it by the total number of students. Therefore, we can calculate the combined mean marks by following these steps:

Step 1: Calculate the sum of the products of the number of students and mean marks for each section.

Sum of the products = (Number of students in Section A * Mean marks in Section A) + (Number of students in Section B * Mean marks in Section B) + (Number of students in Section C * Mean marks in Section C)

Sum of the products = (50 * 75) + (60 * 60) + (70 * 55)

Step 2: Calculate the total number of students in all sections.

Total number of students = Number of students in Section A + Number of students in Section B + Number of students in Section C

Total number of students = 50 + 60 + 70

Step 3: Calculate the combined mean marks.

Combined mean marks = Sum of the products / Total number of students

Combined mean marks = (50 * 75 + 60 * 60 + 70 * 55) / (50 + 60 + 70)

Now, let's calculate the combined mean marks:

Combined mean marks = (3750 + 3600 + 3850) / 180

Combined mean marks = 11200 / 180

Combined mean marks ≈ 62.22

Therefore, the combined mean marks for Sections A, B, and C is approximately 62.22.

Conclusion:
By considering the number of students in each section and their respective mean marks, we were able to calculate the combined mean marks for Sections A, B, and C. This process allows us to analyze the overall performance of all the students in these sections.
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Cal combined mean Section A, B, C mean marks 75,60,55 NO OF STUDENTS 50,60,70?
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