| $Class$ | $0-2$ | $2-4$ | $4-6$ | $6-8$ | $8-10$ | $10-12$ |
|---|---|---|---|---|---|---|
| $f_i$ | $2$ | $7$ | $12$ | $19$ | $9$ | $1$ |
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| $x_i$ | $0$ | $1$ | $5$ | $6$ | $10$ | $12$ | $17$ |
| $f_i$ | $3$ | $2$ | $3$ | $2$ | $6$ | $3$ | $3$ |
| $x_i$ | $4$ | $8$ | $11$ | $17$ | $20$ | $24$ | $32$ |
|---|---|---|---|---|---|---|---|
| $f_i$ | $3$ | $5$ | $9$ | $5$ | $4$ | $3$ | $1$ |
| $y_i$ | $10$ | $18$ | $24$ | $36$ | $42$ | $50$ | $66$ |
|---|---|---|---|---|---|---|---|
| $f_i$ | $3$ | $5$ | $9$ | $5$ | $4$ | $3$ | $1$ |
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