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1. From the following data to organize determine the number of classes K, the width of the sample W, the lower limit of the first
1. From the following data to organize determine the number of classes K, the width of the sample W, the lower limit of the first class, upper limit of the first class and the midpoint of the first class.
3 | 7 | 4 | 2 | 8 |
3 | 5 | 4 | 9 | 10 |
1 | 8 | 7 | 6 | 12 |
6 | 7 | 8 | 9 | 7 |
4 | 6 | 7 | 8 | 7 |
7 | 8 | 6 | 15 | 11 |
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