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in Statistics by (55.0k points)
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The table below shows the daily expenditure on food of 30 households in a locality:

Daily expenditure (in Rs) Number of households
100 – 150 6
150 – 200 7
200 – 250 12
250 – 300 3
300 – 350 2

Find the mean and median daily expenditure on food

1 Answer

+1 vote
by (49.9k points)
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Best answer

We have the following:

\(\frac{6150}{30}\)

= 205 

Now, N 

= 30 ⇒ \(\frac{N}2\) = 15. 

The cumulative frequency just greater than 15 is 25 and the corresponding class is 200 – 250. 

Thus, the median class is 200 – 250. 

∴ l = 200, h = 50, f = 12, c = cf of preceding class = 13 and \(\frac{N}2\) = 15 

Now,

= 200 + 8.33 

= 208.33

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