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| મેળવેલ ગુણ | $10-20$ | $20-30$ | $30-40$ | $40-50$ | $50-60$ | $60-70$ | $70-80$ |
| વિદ્યાર્થીઓની સંખ્યા | $2$ | $3$ | $8$ | $14$ | $8$ | $3$ | $2$ |
| $x_i$ | $2, 9, 8, 3, 5, 7$ |
|---|---|
| $f_i$ | $5, 3, 1, 6, 6, 1$ |
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