Weekly expenditure on Ayurvedic medicines of few households in a locality is recorded below. Weekly Expenditure (in ₹)…

CBSE Class 10 Maths PYQ · Statistics · Find Freuency · 3 Marks · July 2025 · Standard

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653 Marks · July 2025 · Standard

Weekly expenditure on Ayurvedic medicines of few households in a locality is recorded below.
Weekly Expenditure (in ₹)
Number of Households
100 - 150
4
150 - 200
5
200 - 250
y
250 - 300
2
300 - 350
2
If the mean expenditure for this is ₹211, then find the value of the missing frequency 'y'.

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Correct table
Mean = 211
$225 + \frac{(-7)}{13+y} \times 50 = 211$
$\Rightarrow y = 12$