1. **State the problem:** We need to find the difference in weight between the heaviest and lightest baby chick from the given weights: $2 \frac{15}{16}$ ounces, $1 \frac{3}{16}$ ounces, $\frac{15}{16}$ ounce, and $\frac{13}{16}$ ounce. 2. **Convert mixed numbers to improper fractions:** - $2 \frac{15}{16} = \frac{2 \times 16 + 15}{16} = \frac{32 + 15}{16} = \frac{47}{16}$ - $1 \frac{3}{16} = \frac{1 \times 16 + 3}{16} = \frac{16 + 3}{16} = \frac{19}{16}$ 3. **List all weights as improper fractions:** - Heaviest candidate: $\frac{47}{16}$ - Others: $\frac{19}{16}$, $\frac{15}{16}$, $\frac{13}{16}$ 4. **Identify the heaviest and lightest weights:** - Heaviest: $\frac{47}{16}$ - Lightest: $\frac{13}{16}$ 5. **Calculate the difference:** $$\frac{47}{16} - \frac{13}{16} = \frac{47 - 13}{16} = \frac{34}{16}$$ 6. **Simplify the fraction:** $$\frac{34}{16} = \frac{\cancel{2} \times 17}{\cancel{2} \times 8} = \frac{17}{8}$$ 7. **Convert to mixed number:** $$\frac{17}{8} = 2 \frac{1}{8}$$ **Final answer:** The difference in weight between the heaviest and lightest chick is $2 \frac{1}{8}$ ounces.