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| $x_i$ | $0$ | $1$ | $5$ | $6$ | $10$ | $12$ | $17$ |
| $f_i$ | $3$ | $2$ | $3$ | $2$ | $6$ | $3$ | $3$ |
| वर्ग | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ |
| आवृत्ति | $2$ | $3$ | $x$ | $5$ | $4$ |
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