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| वर्ग अंतराल | $0-10$ | $10-20$ | $20-30$ | $30-40$ |
| आवृत्ति | $2$ | $3$ | $4$ | $1$ |
| $x_i$ | $60$ | $61$ | $62$ | $63$ | $64$ | $65$ | $66$ | $67$ | $68$ |
| $f_i$ | $2$ | $1$ | $12$ | $29$ | $25$ | $12$ | $10$ | $4$ | $5$ |
| \text{पैरामीटर} | \text{संयंत्र } $A$ \text{ और } $B$ \text{ डेटा} |
| \text{श्रमिकों की संख्या} | $A: 500, B: 6000$ |
| \text{औसत मासिक वेतन} | $A: Rs. 2500, B: Rs. 2500$ |
| \text{वेतन के वितरण का प्रसरण} | $A: 81, B: 100$ |
| वर्ग | $0-30$ | $30-60$ | $60-90$ | $90-120$ | $120-150$ | $150-180$ | $180-210$ |
| $f_i$ | $2$ | $3$ | $5$ | $10$ | $3$ | $5$ | $2$ |
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