Find the lurking variable. An economist noticed that nations with more TV setsha

Question

Find the lurking variable.

An economist noticed that nations with more TV setshave higher life expectancies. He established with a scatterplot ahigh positive correlation between length of life and number of TVsets. Find the lurking variable, if there is one.

TV setsbrands

Sofa

Wealth ofthe nation

Popcorn

No lurkingvariable

Find the lurking variable.

An economist noticed that nations with more TV setshave higher life expectancies. He established with a scatterplot ahigh positive correlation between length of life and number of TVsets. Find the lurking variable, if there is one.

TV setsbrands

Sofa

Wealth ofthe nation

Popcorn

No lurkingvariable

Explanation / Answer

The lurking variable in this situation is the Wealth of thenation. If the people are wealthy in a nation definitely theirlife expectancies are increased due to nutrient food and advancedmedical fecilities. Also it influences the luxorious life ofpeople. So it may be the cause of a high positive correlationbetween length of life and number of TV sets.

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