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| दैनिक वेतन (रु.) | $30$-$40$ | $40$-$50$ | $50$-$60$ | $60$-$70$ | $70$-$80$ | $80$-$90$ |
| श्रमिकों की संख्या | $17$ | $28$ | $21$ | $15$ | $13$ | $6$ |
| $x_i$ | $2$ | $4$ | $6$ | $8$ | $10$ | $12$ | $14$ | $16$ |
| $f_i$ | $4$ | $4$ | $\alpha$ | $15$ | $8$ | $\beta$ | $4$ | $5$ |
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