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| वर्ग अंतराल | $0$-$5$ | $5$-$10$ | $10$-$15$ | $15$-$20$ | $20$-$25$ |
|---|---|---|---|---|---|
| आवृत्ति | $4$ | $1$ | $10$ | $3$ | $2$ |
| $x_i$ | $4$ | $3$ | $1$ |
| $f_i$ | $1$ | $3$ | $5$ |
| अंक | $1-3$ | $3-5$ | $5-7$ | $7-9$ |
| छात्रों की संख्या | $40$ | $30$ | $20$ | $10$ |
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