robert7248
31.01.2020 •
Biology
Which of the following could represent the test variable in the experiment “the effects of cheap gasoline on fuel injectors”?
a. fuel injectors
b. gasoline
c. new cars
d. car engines
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Ответ:
A. Fuel Injectors is the test variable, because it is the object that the experiment is being tested on, to determine the effects of cheap gasoline
Ответ:
A qualitative data is something that is not described by numbers. The pH of water, oxygen concentration, and changed in the size of fishes can all be described by a number.
Only the occurrences of usual odors cannot be described by a number.