See also. 1  Orthos (disambiguation) 2  Ortho Mode Transducer. 3  Orthochromatic. 4  Orthophotography. 5  Orthogonality. 6  Orthonormality. 7  Orthographic projection. 8  Orthoptera.
Doing a Fair Test. It is important for an experiment to be a fair test. You conduct a fair test by making sure that you change one factor at a time while keeping all other conditions the same. For example, let's imagine that we want to measure which is the fastest toy car to coast down a sloping ramp.ou conduct a fair test by making sure that you change one factor at a time while keeping all other conditions the same. For example, let's imagine that we want to measure which is the fastest toy car to coast down a sloping ramp.
National Center for Fair & Open Testing. NORM-REFERENCED ACHIEVEMENT TESTS. Human beings make tests. They decide What topics to include on the test, what kinds Of questions. to ask, and What the correct answers are, as well as how to use test scores. Tests can be made to. compare students to each other (norm-referenced tests) Or to see whether students have mastered a. body Of knowledge (criterion or standards-referenced tests).