Normal
One of my regular classroom assignments is to give the students 30 years of SAT data and ask them to use it to answer the question : was the sat harder or easier when your parents took it?They have to use their graph to defend a position.After we get a discussion going, I show them how, by choosing the scale of the axises, I can use the same data to appear to support either position.It is important to recognize any bias that is built into the process of displaying a data set.
One of my regular classroom assignments is to give the students 30 years of SAT data and ask them to use it to answer the question : was the sat harder or easier when your parents took it?
They have to use their graph to defend a position.
After we get a discussion going, I show them how, by choosing the scale of the axises, I can use the same data to appear to support either position.
It is important to recognize any bias that is built into the process of displaying a data set.