Can someone just give me answer for this.
Q.22. An aircraft has 120 passenger seats. The number of seats occupied during 100 flights is given below:
No. of seats 100-104 104-108 108-112 112-116 116-120
Frequency 15 20 32 18 15

Determine the mean number of seats occupied over the flights

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hey dude, first find xfrom class intervals. next multiply freq and xie. fixi. now use this formulae :- sum of fixi / sum fi . youll get the ans 
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Refer below

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