A factory records the daily output of widgets in the following frequency distribution
MATHEMATICS · Subjective · CBSE · Mathematics · Statistics · Statistics
Problem
A factory records the daily output of widgets in the following frequency distribution. The mean daily output is 45 widgets.| Daily output (widgets) | 10–20 | 20–30 | 30–40 | 40–50 | 50–60 | 60–70 | 70–80 |
|---|---|---|---|---|---|---|---|
| Number of days | 4 | 7 | 12 | 15 | 8 | k | 4 |