Following Age Wise Chart of 300 Passengers Flying from Delhi to Pune is Prepared by the Airlines Staff | Bzziii.com

The following age wise chart of 300 passengers flying from Delhi to Pune is prepared by the Airlines staff.

AgeLess
than
10
Less
than
10
Less
than
10
Less
than
10
Less
than
10
Less
than
10
Less
than
10
Less
than
10
Number of
passengers
144482132184245287300




Converting the cumulative frequency table into exclusive classes,
AgeNo of passengers`fi``x``i``fi``x``i`
0-1014570
10-203015450
20-303825950
30-4052351820
40-5050452250
50-6061553355
60-7042652730
70-804375975
`\sum fi` = 300`\sum``fi``x``i` = 12600

Mean age = `\overline{x}` = `\frac{\sum f i x i}{\sum fi}` 

= `\overline{x}` = `12600/300`

= `\overline{x}` = 42






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