The frequency distribution of the marks obtained by students in a Science examination is given below: Marks 5-15 15-25 25-35 35-45 Number of students 20 30 30 20 What is the arithmetic mean?

UPSC NDA II 2025 Mathematics Paper

Question : 117 of 120

Marks: +1, -0

The frequency distribution of the marks obtained by students in a Science examination is given below:

Marks	5-15	15-25	25-35	35-45
Number of students	20	30	30	20

What is the arithmetic mean?

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