Marks obtained by candidates in a scholarship test are grouped as follows
MATHEMATICS · Subjective · CBSE · Mathematics · Statistics · Statistics
Problem
Marks obtained by candidates in a scholarship test are grouped as follows. The mean mark of the distribution is 25.| Marks | 0–10 | 10–20 | 20–30 | 30–40 | 40–50 | 50–60 |
|---|---|---|---|---|---|---|
| Number of candidates | k | 15 | 18 | 14 | 10 | 5 |