Problems 2.9
Question 2
The following size distribution was obtained for glass spheres by microscope examination. Complete the table rows:
| Size range (um): | <5 | 5-7 | 7-10 | 10-15 | 15-20 | 20-30 | 30-40 | 40-50 | >50 | totals |
| Number in range: | 0 | 50 | 150 | 200 | 55 | 45 | 20 | 5 | 0 | ------ |
| (mid point)3 . frequency: | 0 | 10800 | A | |||||||
| Relative mass: | 0 | 0.0039 | ||||||||
| Cumulative mass undersize: | 0 | 0.0039 |
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