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Answer :
Taking class intervals as 0.00, —0.04, 0.04, —0.08, and so on, a grouped frequency
table can be constructed as follows.
Concentration of \(S\left(O_{2}\right)\) (in ppm) | Number of days (frequency) |
0.00 - 0.04 | 4 |
0.04 - 0.08 | 9 |
0.08 - 0.12 | 9 |
0.12 - 0.16 | 2 |
0.16 - 0.20 | 4 |
0.20 - 0.24 | 2 |
Total | 30 |