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- There are two types of frequency distribution. (a) Inclusive (b) Exclusive
In the inclusive type, the upper limit of one class does not coincide with the lower limit of the next class.
In the exclusive type, the upper limit of one class coincides with the lower limit of the next class.- Inclusive type of frequency distribution can be converted into exclusive type by extending the class limits by 0.5
- Class width is the difference between the actual limits of any class.
- Class mark is the mid point of each interval.
