At a school, there are two different math classes for children of the same age. The two classes...

Question:

At a school, there are two different math classes for children of the same age. The two classes have different teachers. The school principal is interested in gauging the effectiveness of two different teaching methods and asks each teacher to try one of the methods. At the end of the semester both classes are given the same test and the results are compared.

In this experiment, what is the treatment variable?

Give an example of a variable that could confound the results.

Experimental Design:

When we are interested in investigating if there is a cause and effect relationship between two variables, an experiment is needed in order to draw these kinds of conclusions. Depending on what we are trying to conclude is how we will design our experiment. We need to determine what we want to see a change in, and what we believe may have an effect on that change.

In order to determine the treatment variable in this situation, we have to think about what is different about the two classes. Both classes are math...

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