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| \text{विवरण} | \text{फर्म } $A$ \text{ और फर्म } $B$ |
| \text{वेतन भोगियों की संख्या} | $A: 586, B: 648$ |
| \text{मासिक वेतन का माध्य} | $A: 5253, B: 5253$ |
| \text{वेतन का प्रसरण} | $A: 100, B: 121$ |
| चर $(x)$ | $x_{1}$ | $x_{2}$ | $x_{3} \ldots x_{15}$ |
| आवृत्ति $(f)$ | $f_{1}$ | $f_{2}$ | $f_{3} \ldots f_{15}$ |
| वर्ग अंतराल | $0-10$ | $10-20$ | $20-30$ | $30-40$ |
| आवृत्ति | $2$ | $3$ | $4$ | $1$ |
| $x_i$ | $4$ | $8$ | $11$ | $17$ | $20$ | $24$ | $32$ |
|---|---|---|---|---|---|---|---|
| $f_i$ | $3$ | $5$ | $9$ | $5$ | $4$ | $3$ | $1$ |
| $y_i$ | $10$ | $18$ | $24$ | $36$ | $42$ | $50$ | $66$ |
|---|---|---|---|---|---|---|---|
| $f_i$ | $3$ | $5$ | $9$ | $5$ | $4$ | $3$ | $1$ |
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