Question: In a study with a similar design as the previous example, researchers looked at the effects of nutrition on reading ability. In Group A, children

In a study with a similar design as the previous example, researchers looked at the effects of nutrition on reading ability. In Group A, children ate at least three ounces of dark green vegetables every day for one month. In Group B, children were fed their regular diet. At the end of the month, the children took a reading comprehension test. Those who ate the green vegetables every day for one month (Group A) did not vary in their test scores when compared to Group B.

Questions:

1. What is the independent variable? Why?

2. What is the independent variable? Why?

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