Q. 14.8( 29 Votes )

# Weights of parcels in a transport office are given below.

Find the mean weight of the parcels.

Answer :

Given is the frequency distribution table for ungrouped data.

We have

⇒ 25 number of parcels have weight each 50 kg,

34 number of parcels have weight each 65 kg,

And so on…

This also implies that,

Total weight of 25 parcels = 1250,

Total weight of 34 parcels = 2210,

And so on…

Mean of such ungrouped data is given by

⇒

⇒ [∵ ∑x_{i}f_{i} = 17000 & ∑f_{i} = 200]

⇒ Mean = 85

Thus, mean weight of the parcel is 85 kg.

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