| घंटों की संख्या | $0-5$ | $5-10$ | $10-15$ | $15-20$ |
| बारंबारता | $8$ | $16$ | $4$ | $2$ |
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| बारंबारता $(f_i)$ | चर $(x_i)$ |
| $4$ | $4$ |
| $8$ | $6$ |
| $14$ | $8$ |
| $11$ | $10$ |
| $3$ | $12$ |
| वर्ग | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ | $70-80$ |
|---|---|---|---|---|---|---|
| बारंबारता | $5$ | $7$ | $12$ | $7$ | $10$ | $9$ |
| अंक | छात्रों की संख्या |
| $10-20$ | $6$ |
| $20-30$ | $17$ |
| $30-50$ | $15$ |
| $50-70$ | $16$ |
| $70-100$ | $26$ |
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