If this is an experiment, what variable was controlled by the experimenter?
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1. This is an example of an (observational study/designed experiment)
If this is an experiment, what variable was controlled by the experimenter?
2. This is an example of an (observational study/designed experiment)
If this is an experiment, what variable was controlled by the experimenter?
3. This (is/is not) a randomized experiment because __ the treatment is not randomly selected by the researcher__________________________________________
4. This (is/is not) a randomized experiment because ______ since the treatment is not randomly selected by the researcher______________________________________
5. These (are/are not) matched pairs because ________ two measurements of the same variable have not been taken on the same object or matched objects____________________________________
6. These (are/are not) matched pairs because ____two measurements of the same variable have been taken on the same object________________________________________
7. These (are/are not) matched pairs because ______two measurements of the same variable have not been taken on the same object or matched objects______________________________________
8. This is a (blind experiment/double blind experiment/neither) because _____
9. This is a (blind experiment/double blind experiment/neither) because ___________________________
10. This is a (blind experiment/double blind experiment/neither) because _______________
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