Q. 44.5( 2 Votes )

The weights of tea in 70 packets are shown in the following table

Find the mean weight of packets.

Answer :

First, we find the class marks of the given data as follows.

Here, (assume mean)

and (class width)

By assumed mean method,

= 203.5 - (108/70)

= 203.5 - 1.54 = 201.96

Hence, the required mean weight is 201.96 g.

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