1. Calculate an effect size index (d) and give a verbal description.

XX₁ = 14 XX₂ =18 = 20

Sara enlisted the help of her high school principal and a local optometrist. Her data consisted of the grade point averages of high school students who were near-sighted (myopia) or farsighted (hyperopia). Analyze the data and write a Descriptive Statistics Report. Let = 1.0.

Nearsighted:

3.0 2.8 3.4 2.0 3.4 3.0 2.6 2.6 3.6 3.4

2.6 3.0 3.2 2.8 3.4 3.2 3.0

Farsighted:

2.5 2.9 3.7 2.5 2.3 2.7 2.1 2.5 2.5 2.9

2.5 2.3 1.9 2.7 1.9 2.5 2.7 2.1 2.3 2.5