The following table shows the distribution of marks obtained by students in an examination: find the arithmetic mean of the marks using the direct method (direct method). [Table — marks (x): 10, 15, 20, 25, 30; number of students: 3, 7, 12, 6, 2]

Subject: Mathematics | Topic: Statistics | Difficulty: MEDIUM

Options

1. (A) 18.5
2. (B) 13.5
3. (C) 23.5
4. (D) 19.5

Verified Answer

Option (D): 19.5

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