Question
In an experiment, a scientist de
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Select all the correct answers.
A colorimeter is an instrument used for chemical analysis by Eomparing a liquid's color with standard colors. In an experiment, a scientist
colorimeters and noted the readings. The first colorimeter showed consistent readings that were five points lower than the
colorimeter provided readings that were the same as the actual reading. Which two statements are implications of these readings?
The first colorimeter is reliable but not valid.
second colorimeter is valid and reliable.
Both the colorimeters are reliable and valid.
The readings of the first colorimeter can be used without repeating the experiment.
The readings of the second colorimeter aren't reliable and can't be used for the experiment.
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Answer
The second colorimeter is valid and reliable. The readings of the first colorimeter can be used but may need to be adjusted by adding five points.