Question
Download Solution PDFThe mean marks of the following distribution is:
| Marks obtained | No. of students |
| 25 | 5 |
| 30 | 6 |
| 35 | 3 |
| 40 | 1 |
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
| Marks obtained | No. of students |
| 25 | 5 |
| 30 | 6 |
| 35 | 3 |
| 40 | 1 |
Formula used:
Mean = \(\frac{Sum\ of\ marks\ obtained}{Number\ of students}\)
Calculation:
⇒ \(\frac{(25 × 5 \ + \ 30 × 6 \ + \ 35 × 3 \ + \ 40 × 1)}{(5 \ + \ 6 \ + \ 3 \ + \ 1)}\)
⇒ \(\frac{(125 \ + \ 180 \ + \ 105 \ + \ 40)}{15}\)
⇒ \(\frac{450}{15}\)
⇒ 30
Hence, the required value is 30.
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