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| वर्ग अंतराल | बारंबारता |
| $0-10$ | $5$ |
| $10-20$ | $x$ |
| $20-30$ | $20$ |
| $30-40$ | $15$ |
| $40-50$ | $y$ |
| $50-60$ | $5$ |
| कुल | $60$ |
| जीवनकाल (घंटों में) | लैंपों की संख्या |
| $1500-2000$ | $14$ |
| $2000-2500$ | $56$ |
| $2500-3000$ | $60$ |
| $3000-3500$ | $86$ |
| $3500-4000$ | $74$ |
| $4000-4500$ | $62$ |
| $4500-5000$ | $48$ |
| लंबाई (mm में) | पत्तियों की संख्या |
| $118-126$ | $3$ |
| $127-135$ | $5$ |
| $136-144$ | $9$ |
| $145-153$ | $12$ |
| $154-162$ | $5$ |
| $163-171$ | $4$ |
| $172-180$ | $2$ |
| साक्षरता दर (में $\%$) | $45-55$ | $55-65$ | $65-75$ | $75-85$ | $85-95$ |
| शहरों की संख्या | $3$ | $10$ | $11$ | $8$ | $3$ |
| दैनिक जेब भत्ता (in $Rs.$) | $11-13$ | $13-15$ | $15-17$ | $17-19$ | $19-21$ | $21-23$ | $23-25$ |
| बच्चों की संख्या | $7$ | $6$ | $9$ | $13$ | $f$ | $5$ | $4$ |
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