At a School There Are Two Different Math Classes for Children

question 30

Essay

At a school there are two different math classes for children of the same age. 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 variable of interest? Give some examples of variables which could be confounding
variables.

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