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| ऊंचाई ($cm$ में) | $160$ | $150$ | $152$ | $161$ | $156$ | $154$ | $155$ |
| छात्रों की संख्या | $12$ | $8$ | $4$ | $4$ | $3$ | $3$ | $7$ |
| $x_i$ | $5$ | $15$ | $25$ | $35$ | $45$ | $55$ |
| $f_i$ | $12$ | $18$ | $27$ | $20$ | $17$ | $6$ |
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