Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

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Learning Math Home
Session 1 Part A Part B Part C Part D Homework
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Session 1 Materials:

Session 1, Part C:
Bias in Measurement

In This Part: Measurement Error | Testing Your Measurement Bias

The difference between what individuals think they see (and how they see it) and the objective reality of what they have observed is called "visual error." These errors in perception, which can significantly misrepresent reality, are a natural consequence of being human.

In this Interactive Activity, you will have an opportunity to see how well you make two visual judgements.

This activity requires the Flash plug-in, which you can download for free from Macromedia's Web site. If you prefer, you can view the non-interactive version of this activity, which doesn't require the Flash plug-in.

Problem C1


Would you say that the errors you made in the visual judgements of the Interactive Activity were due to random error, or to bias? Why or why not?

Next > Part D: Bias in Sampling

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