| ${x_i}$ | $3$ | $8$ | $13$ | $18$ | $23$ |
| ${f_i}$ | $7$ | $10$ | $15$ | $10$ | $6$ |
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| छात्र | अंक |
| रवि | $25, 50, 45, 30, 70, 42, 36, 48, 35, 60$ |
| हसीना | $10, 70, 50, 20, 95, 55, 42, 60, 48, 80$ |
| $x_{i}$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
| $f_{i}$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ | $7$ | $8$ | $9$ | $10$ |
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