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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643 Marks · July 2025 · Standard
Weekly expenditure on Ayurvedic medicines of few households in a locality is recorded below.
Weekly Expenditure (in ₹)
quad Number of Households
$100-150$
quad $4$
$150-200$
quad $5$
$200-250$
quad $y$
$250-300$
quad $2$
$300-350$
quad $2$
If the mean expenditure for this is ₹$211$, then find the value of the missing frequency 'y'.
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Correct table
Mean = $211$
$\Rightarrow 225 + \frac{(-7)}{13+y} \times 50 = 211$
$\Rightarrow y = 12$
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