Question

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The table below shows the daily expenditure on food of
30 households in a locality.
Daily expenditure
(in rupees)
100-150 150-200 200-250 250-300 300-350
Number of
5
households
6
3
13
3
Find the mean daily expenditure on food by a suitable method.​

Answer 1

Answer:

213.33

Step-by-step explanation:

First u have to find mid value(class mark) which are as follows:-

• 125
• 175
• 225
• 275
• 325

Then (ui) which is as follow:-

• (-2)
• (-1)
• 0
• 1
• 2

Then, sigma(fiui) which is as follow:-

• (-10)
• (-6)
• 0
• 3
• 6

sigma(fiui) = (-7)

a= 225,

h= 50

sigma(fi)=30

sigma(fiui)=(-7)

• Mean = a + [sigma(fiui)/sigma (fi)] (h)
• 225 + (-7/30) (50)
• 225 + (-35/3)
• 225+(-11.67)
• 225 - 11.67
• 213.33

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