| વર્ગ અંતરાલ | $0$–$4$ | $4$–$8$ | $8$–$12$ | $12$–$16$ |
|---|---|---|---|---|
| આવૃત્તિ $(f_i)$ | $1$ | $2$ | $2$ | $1$ |
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| ચલ $(x)$ | $x_{1}$ | $x_{2}$ | $x_{3} \ldots x_{15}$ |
| આવૃત્તિ $(f)$ | $f_{1}$ | $f_{2}$ | $f_{3} \ldots f_{15}$ |
| $X$ | $c$ | $2c$ | $3c$ | $4c$ | $5c$ | $6c$ |
| $f$ | $2$ | $1$ | $1$ | $1$ | $1$ | $1$ |
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