Answer :

lower class boundary = lower limit - 0.5

Upper class boundary = upper limit + 0.5

Mid value of class = (lower class limit + upper class limit)/2

class - size = upper class boundary – lower class boundary

Frequency density = class frequency of that class/class size

From the given data, we can see that weight of oranges in the range 30 - 40 gms are 4. Similarly for other ranges Table is formulated below, Using the above formulas.

The class limit in this table is exclusive type

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