Ina data ,the greatest values is 98 and smallest value is 40 and size of class interval is 10. The number of classes is:

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3 + 3 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.

Ina data ,the greatest values is 98 and smallest value is 40 and size of class interval is 10. The number of classes is:

6

8

4

7