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2 years ago

Which pair of variables shows a clear causal link?

Mathematics

2 answers:

xxTIMURxx [149]2 years ago

8 0

The number of lights switched on in a room and the room's brightness.

LekaFEV [45]2 years ago

4 0

Answer:

The pair of variables that show a clear causal link are the number of lights switched on in a room and the room's brightness

Step-by-step explanation:

Clear casual link indicates two variables that have a completly and unequivocal relation, meaning that changes in one variable produce automatically and with no doubt a change in the other.

Case A does not have this link as these two variables have no relation at all. A person from certian state may have any type of academic degree.

Case B Cost of aviation fuel may be explained by other variables like international prices and flight duration may be explained also due to climate.

Case D- a person may have a pet even under low income levels.

Case C is the only adequate relation, as turning lights on will always increase room's brightness.

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