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| $X_i$ | $0$ | $1$ | $2$ | $3$ | $4$ | $5$ |
| $f_i$ | $k+2$ | $2k$ | $k^2-1$ | $k^2-1$ | $k^2-1$ | $k-3$ |
| $X$ | $35$ | $54$ | $52$ | $53$ | $56$ | $58$ | $52$ | $50$ | $51$ | $49$ |
| $Y$ | $108$ | $107$ | $105$ | $105$ | $106$ | $107$ | $104$ | $103$ | $104$ | $101$ |
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