| अंक | $0-10$ | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ |
| लड़कियों की संख्या | $6$ | $8$ | $14$ | $16$ | $4$ | $2$ |
| अंक | $f_{i}$ | $C_{f}$ | $x_{i}$ | $|x_{i}-M|$ | $f_{i}|x_{i}-M|$ |
| $0-10$ | $6$ | $6$ | $5$ | $22.86$ | $137.16$ |
| $10-20$ | $8$ | $14$ | $15$ | $12.86$ | $102.88$ |
| $20-30$ | $14$ | $28$ | $25$ | $2.86$ | $40.04$ |
| $30-40$ | $16$ | $44$ | $35$ | $7.14$ | $114.24$ |
| $40-50$ | $4$ | $48$ | $45$ | $17.14$ | $68.56$ |
| $50-60$ | $2$ | $50$ | $55$ | $27.14$ | $54.28$ |
| कुल | $N=50$ | - | - | - | $517.16$ |
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| ${x_i}$ | $5$ | $7$ | $9$ | $10$ | $12$ | $15$ |
| ${f_i}$ | $8$ | $6$ | $2$ | $2$ | $2$ | $6$ |
| वर्ग अंतराल | $0-4$ | $4-8$ | $8-12$ | $12-16$ |
| बारंबारता | $4$ | $3$ | $2$ | $1$ |
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