The following grouped frequency distribution gives the daily time (in minutes) spent…
MATHEMATICS · Subjective · CBSE · Mathematics · Statistics · Statistics
Problem
The following grouped frequency distribution gives the daily time (in minutes) spent on physical exercise by a group of students. Exactly 50 students were surveyed and the mean daily exercise time was 25 minutes.| Time (minutes) | 0–10 | 10–20 | 20–30 | 30–40 | 40–50 | 50–60 |
|---|---|---|---|---|---|---|
| Number of students | k_1 | 7 | 10 | k_2 | 6 | 5 |