- Plot the data below on the graph provided.

- Draw a linear best fit line through the data points on the graph.
- ______________ Calculate the slope of the linear best fit line. The slope is the experimental index of refraction for the material.
- ______________ The above material is reported to have a theoretic index of refraction of 1.33. What is the percentage error for the slope you calculated based against a theoretic value of 1.33?
- __________________ When spear fishing in shallow water on the reef, does the experienced spear fisher aim above or below the fish that he sees in the water?
- __________ By what percentage does an object underwater appear to a SCUBA diver?
- What is an image?
- _________________ Is the image inside a pinhole camera right-side-up or upside-down?
- _________________ Is the image produced by a convex lens right-side-up or upside-down?
- What is myopia?
- What is presbyopia?
- What is the typical treatment for presbyopia?

[$\text{slope m}=\frac{(\mathrm{y2}-\mathrm{y1})}{(\mathrm{x2}-\mathrm{x1})}$] [ $\Delta \%=\frac{(\text{observed}-\mathrm{predicted})}{\mathrm{predicted}}$ ]