Question

Find the average number of children per family.
92. If the mean of the following distribution is 27, find the value of p.
0-10, 10-20 20-30 ,
30-40
40-50
requenc
12
13
10
33. The table below shows the daily expenditure on food of 25 households in a locality.
Daily Expenditure (in) 100-150 150-200 200-250 250-300 300-350
No. of households
4 5 1 12 1 2 1
Find the mean daily expenditure on food by a suitable method.
An aircraft has 120 passenger seats. The number of seats occupied during 100 flights is given in
the following table:
Number 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.​

Answer 1

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